131,810
131,810 is a composite number, even.
131,810 (one hundred thirty-one thousand eight hundred ten) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2 × 5 × 7² × 269. Its proper divisors sum to 145,210, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x202E2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 18,131
- Recamán's sequence
- a(228,752) = 131,810
- Square (n²)
- 17,373,876,100
- Cube (n³)
- 2,290,050,608,741,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 277,020
- φ(n) — Euler's totient
- 45,024
- Sum of prime factors
- 290
Primality
Prime factorization: 2 × 5 × 7 2 × 269
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,810 = [363; (17, 1, 2, 2, 3, 4, 1, 1, 14, 3, 1, 3, 21, 11, 8, 14, 1, 2, 3, 1, 1, 2, 2, 8, …)]
Period length 58 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand eight hundred ten
- Ordinal
- 131810th
- Binary
- 100000001011100010
- Octal
- 401342
- Hexadecimal
- 0x202E2
- Base64
- AgLi
- One's complement
- 4,294,835,485 (32-bit)
- Scientific notation
- 1.3181 × 10⁵
- As a duration
- 131,810 s = 1 day, 12 hours, 36 minutes, 50 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆
- Greek (Milesian)
- ͵ρλαωιʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋪·𝋪
- Chinese
- 一十三萬一千八百一十
- Chinese (financial)
- 壹拾參萬壹仟捌佰壹拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131810, here are decompositions:
- 13 + 131797 = 131810
- 31 + 131779 = 131810
- 61 + 131749 = 131810
- 67 + 131743 = 131810
- 79 + 131731 = 131810
- 97 + 131713 = 131810
- 103 + 131707 = 131810
- 109 + 131701 = 131810
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8B A2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.226.
- Address
- 0.2.2.226
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.226
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 131,810 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 131810 first appears in π at position 962,149 of the decimal expansion (the 962,149ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.