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# 3

Number 3 (three) is an odd digit prime number and natural number following 2 and preceding 4.

## Properties of the number 3

 Nominal 3 Cardinal three Ordinal 3rd Number of digits 1 Sum of digits 3 Product of digits 3 Number parity Odd
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## Prime Factorization of 3

 Prime factorization 3 Prime factors 3 Number of distinct prime factors ω(n) 1 Total number of prime factors Ω(n) 1 Sum of prime factors 3 Product of prime factors 3
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## Divisors of 3

 List of proper divisors 1 List of all dividers 1, 3 Number of divisors d(n) 2 Sum of all divisors σ(n) 4 Aliquot sum 1 3 is a deficient number , since it is larger than the sum of its proper divisors (1). Its deficiency is 2.
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## Prime numbers

 Is 3 a prime number? Yes Is 3 a semiprime number? No Is 3 a Chen prime number? Yes Is 3 a Mersenne prime number? Yes: M1
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## Sequences

 Is 3 a Catalan number? No Is 3 a Fibonacci number? Yes Is 3 a Idoneal number? Yes: I2
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## Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
 3 is not a Happy number 3 is a Humble number 3 is not a Münchhausen number 3 is not a Perfect number 3 is not a Perfect square 3 is a Palindrome
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## Numeric Bases of 3

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
BaseSystemValue
2Binary112
3Ternary103
4Quaternary34
5Quinary35
6Senary36
7Septenary37
8Octal38
9Nonary39
10Decimal3
12Duodecimal312
20Vigesimal320
36Base36336
60Sexagesimal360
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## Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
 Square of 3 (n2) 9 Cube of 3 (n3) 27 Square root of 3 1.73205 Natural Logarithm (ln) of 3 1.09861 Decimal Logarithm (log) of 3 0.477121
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## Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
 Sine of 3 0.14112 Cosecant of 3 7.08617 Cosine of 3 -0.989992 Secant of 3 -1.01011 Tangent of 3 -0.142547 Cotangent of 3 -7.01525
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## Number parity

Parity is the property of an integer of whether it is even or odd.

No

### Is 3 an Odd Number?

Yes, the number 3 is an odd number.
Total number of all odd numbers from 1 to 3 is 2
Sum of all the odd numbers from 1 to 3 are 4
The sum of all odd numbers is a perfect square: 4 = 2
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
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## Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
 The spelling of 3 in words is "three", meaning that: 3 is an aban number (a number without the letter a) 3 is not an eban number (as it contains the letter e) 3 is an iban number (a number without the letter i) 3 is an oban number (a number without the letter o) 3 is not a tban number (as it contains the letter t) 3 is an uban number (a number without the letter u)
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## Numeral systems

How to write 3 in other number systems?
 Bengali numerals ৩ Eastern Arabic numerals ٣ Hieroglyphs numeralsused in Ancient Egypt 𓏼 Khmer numerals ៣ Japanese numerals 三 Roman numerals III Thai numerals ๓
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## Translation

How do you say 3 in 38 different languages?
 Arabic ثلاثة Croatian tri Czech tři Danish tre Dutch drie Estonian etɔ̃ Faroese tríggir Filipino tatló Finnish kolme French trois Greek τρία German drei Hebrew שלוש Hindi तीन Hungarian három Icelandic þrír Indonesian tiga Italian tre Japanese 三 Korean 삼 Latvian trīs Lithuanian trys Norwegian tre Persian سه Polish trzy Portuguese três Romanian trei Russian три Serbian три Slovak tri Slovene tri Spanish tres Swahili tatu Swedish tre Thai สาม Turkish üç Ukrainian три Vietnamese ba
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## Miscellaneous

 Number 3 reversed 3 ASCII Code 3  Unicode Character U+0003  Unix Timestamp Thu, 01 Jan 1970 00:00:03 +0000
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