Number
131
131 is a prime, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 5
- Digital root
- 5
- Palindrome
- Yes
- Divisor count
- 2
- σ(n) — sum of divisors
- 132
Primality
131 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
Representations
- In words
- one hundred thirty-one
- Ordinal
- 131st
- Roman numeral
- CXXXI
- Binary
- 10000011
- Octal
- 203
- Hexadecimal
- 83
Also seen as
Prime neighborhood
Unicode codepoint
U+0083
Control character (Cc)
UTF-8 encoding: C2 83 (2 bytes).
Hex color
#000083
RGB(0, 0, 131)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.131.