Number
231
231 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 6
- Digital root
- 6
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 384
Primality
Prime factorization: 3 × 7 × 11
Divisors & multiples
Aliquot sum (sum of proper divisors):
153
Representations
- In words
- two hundred thirty-one
- Ordinal
- 231st
- Roman numeral
- CCXXXI
- Binary
- 11100111
- Octal
- 347
- Hexadecimal
- E7
Also seen as
Unicode codepoint
ç
U+00E7
Lowercase letter (Ll)
UTF-8 encoding: C3 A7 (2 bytes).
Hex color
#0000E7
RGB(0, 0, 231)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.231.