Number
243
243 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 3
- Digit sum
- 9
- Digital root
- 9
- Palindrome
- No
- Divisor count
- 6
- σ(n) — sum of divisors
- 364
Primality
Prime factorization: 3 5
Divisors & multiples
Aliquot sum (sum of proper divisors):
121
Representations
- In words
- two hundred forty-three
- Ordinal
- 243rd
- Roman numeral
- CCXLIII
- Binary
- 11110011
- Octal
- 363
- Hexadecimal
- F3
Also seen as
Unicode codepoint
ó
U+00F3
Lowercase letter (Ll)
UTF-8 encoding: C3 B3 (2 bytes).
Hex color
#0000F3
RGB(0, 0, 243)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.243.