131,111
131,111 is a prime, odd.
131,111 (one hundred thirty-one thousand one hundred eleven) is an odd 6-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x20027.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 8
- Digit product
- 3
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 111,131
- Square (n²)
- 17,190,094,321
- Cube (n³)
- 2,253,810,456,520,631
- Divisor count
- 2
- σ(n) — sum of divisors
- 131,112
- φ(n) — Euler's totient
- 131,110
Primality
131,111 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,111 = [362; (10, 1, 4, 5, 4, 6, 1, 13, 1, 1, 1, 1, 1, 4, 2, 1, 37, 2, 2, 1, 6, 1, 102, 1, …)]
Representations
- In words
- one hundred thirty-one thousand one hundred eleven
- Ordinal
- 131111th
- Binary
- 100000000000100111
- Octal
- 400047
- Hexadecimal
- 0x20027
- Base64
- AgAn
- One's complement
- 4,294,836,184 (32-bit)
- Scientific notation
- 1.31111 × 10⁵
- As a duration
- 131,111 s = 1 day, 12 hours, 25 minutes, 11 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓎆𓏺
- Greek (Milesian)
- ͵ρλαριαʹ
- Mayan (base 20)
- 𝋰·𝋧·𝋯·𝋫
- Chinese
- 一十三萬一千一百一十一
- Chinese (financial)
- 壹拾參萬壹仟壹佰壹拾壹
Also seen as
UTF-8 encoding: F0 A0 80 A7 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.0.39.
- Address
- 0.2.0.39
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.0.39
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 131,111 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.