131,560
131,560 is a composite number, even.
131,560 (one hundred thirty-one thousand five hundred sixty) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2³ × 5 × 11 × 13 × 23. Its proper divisors sum to 231,320, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x201E8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 65,131
- Recamán's sequence
- a(229,252) = 131,560
- Square (n²)
- 17,308,033,600
- Cube (n³)
- 2,277,044,900,416,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 362,880
- φ(n) — Euler's totient
- 42,240
- Sum of prime factors
- 58
Primality
Prime factorization: 2 3 × 5 × 11 × 13 × 23
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,560 = [362; (1, 2, 2, 8, 1, 1, 8, 1, 1, 1, 8, 1, 1, 8, 2, 2, 1, 724)]
Period length 18 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand five hundred sixty
- Ordinal
- 131560th
- Binary
- 100000000111101000
- Octal
- 400750
- Hexadecimal
- 0x201E8
- Base64
- AgHo
- One's complement
- 4,294,835,735 (32-bit)
- Scientific notation
- 1.3156 × 10⁵
- As a duration
- 131,560 s = 1 day, 12 hours, 32 minutes, 40 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλαφξʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋲·𝋠
- Chinese
- 一十三萬一千五百六十
- Chinese (financial)
- 壹拾參萬壹仟伍佰陸拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131560, here are decompositions:
- 17 + 131543 = 131560
- 41 + 131519 = 131560
- 53 + 131507 = 131560
- 59 + 131501 = 131560
- 71 + 131489 = 131560
- 83 + 131477 = 131560
- 113 + 131447 = 131560
- 179 + 131381 = 131560
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 87 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.232.
- Address
- 0.2.1.232
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.232
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 131,560 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 131560 first appears in π at position 208,515 of the decimal expansion (the 208,515ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.