Number
1,309
1,309 is a composite number, odd, a calendar year.
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 13
- Digital root
- 4
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 1,728
Primality
Prime factorization: 7 × 11 × 17
Divisors & multiples
Aliquot sum (sum of proper divisors):
419
First multiples
Representations
- In words
- one thousand three hundred nine
- Ordinal
- 1309th
- Roman numeral
- MCCCIX
- Binary
- 10100011101
- Octal
- 2435
- Hexadecimal
- 51D
Also seen as
Unicode codepoint
ԝ
U+051D
Lowercase letter (Ll)
UTF-8 encoding: D4 9D (2 bytes).
Hex color
#00051D
RGB(0, 5, 29)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.29.