131,809
131,809 is a composite number, odd.
131,809 (one hundred thirty-one thousand eight hundred nine) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 89 × 1,481. Written other ways, in hexadecimal, 0x202E1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 908,131
- Recamán's sequence
- a(228,754) = 131,809
- Square (n²)
- 17,373,612,481
- Cube (n³)
- 2,289,998,487,508,129
- Divisor count
- 4
- σ(n) — sum of divisors
- 133,380
- φ(n) — Euler's totient
- 130,240
- Sum of prime factors
- 1,570
Primality
Prime factorization: 89 × 1481
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,809 = [363; (18, 6, 1, 1, 1, 1, 6, 18, 726)]
Period length 9 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand eight hundred nine
- Ordinal
- 131809th
- Binary
- 100000001011100001
- Octal
- 401341
- Hexadecimal
- 0x202E1
- Base64
- AgLh
- One's complement
- 4,294,835,486 (32-bit)
- Scientific notation
- 1.31809 × 10⁵
- As a duration
- 131,809 s = 1 day, 12 hours, 36 minutes, 49 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαωθʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋪·𝋩
- Chinese
- 一十三萬一千八百零九
- Chinese (financial)
- 壹拾參萬壹仟捌佰零玖
Also seen as
UTF-8 encoding: F0 A0 8B A1 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.225.
- Address
- 0.2.2.225
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.225
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 131,809 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.