131,872
131,872 is a composite number, even.
131,872 (one hundred thirty-one thousand eight hundred seventy-two) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2⁵ × 13 × 317. Its proper divisors sum to 148,604, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20320.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 336
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 278,131
- Recamán's sequence
- a(228,628) = 131,872
- Square (n²)
- 17,390,224,384
- Cube (n³)
- 2,293,283,669,966,848
- Divisor count
- 24
- σ(n) — sum of divisors
- 280,476
- φ(n) — Euler's totient
- 60,672
- Sum of prime factors
- 340
Primality
Prime factorization: 2 5 × 13 × 317
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,872 = [363; (7, 20, 31, 1, 1, 8, 2, 5, 1, 1, 7, 1, 4, 6, 4, 2, 44, 1, 17, 1, 1, 1, 4, 2, …)]
Representations
- In words
- one hundred thirty-one thousand eight hundred seventy-two
- Ordinal
- 131872nd
- Binary
- 100000001100100000
- Octal
- 401440
- Hexadecimal
- 0x20320
- Base64
- AgMg
- One's complement
- 4,294,835,423 (32-bit)
- Scientific notation
- 1.31872 × 10⁵
- As a duration
- 131,872 s = 1 day, 12 hours, 37 minutes, 52 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρλαωοβʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋭·𝋬
- Chinese
- 一十三萬一千八百七十二
- Chinese (financial)
- 壹拾參萬壹仟捌佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131872, here are decompositions:
- 11 + 131861 = 131872
- 23 + 131849 = 131872
- 89 + 131783 = 131872
- 101 + 131771 = 131872
- 113 + 131759 = 131872
- 233 + 131639 = 131872
- 281 + 131591 = 131872
- 311 + 131561 = 131872
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8C A0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.32.
- Address
- 0.2.3.32
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.32
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 131,872 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 131872 first appears in π at position 276,803 of the decimal expansion (the 276,803ordinal-suffix:rd 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.