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Number

229

229 is a prime, odd, a calendar year.

Cousin Prime Deficient Number Prime Sexy Prime Squarefree Twin Prime Year

Properties

Parity
Odd
Digit count
3
Digit sum
13
Digital root
4
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
230

Primality

229 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 229
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 229)
1 × 229
First multiples
229 · 458 · 687 · 916 · 1,145 · 1,374 · 1,603 · 1,832 · 2,061 · 2,290

Representations

In words
two hundred twenty-nine
Ordinal
229th
Roman numeral
CCXXIX
Binary
11100101
Octal
345
Hexadecimal
E5

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 227 (gap of 2)
  • Next prime: 233 (gap of 4)

Pair status: twin with 227, cousin with 233.

Unicode codepoint
å
U+00E5
Lowercase letter (Ll)

UTF-8 encoding: C3 A5 (2 bytes).

Hex color
#0000E5
RGB(0, 0, 229)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.229.