131,500
131,500 is a composite number, even.
131,500 (one hundred thirty-one thousand five hundred) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 5³ × 263. Its proper divisors sum to 156,788, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x201AC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 5,131
- Recamán's sequence
- a(229,372) = 131,500
- Square (n²)
- 17,292,250,000
- Cube (n³)
- 2,273,930,875,000,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 288,288
- φ(n) — Euler's totient
- 52,400
- Sum of prime factors
- 282
Primality
Prime factorization: 2 2 × 5 3 × 263
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,500 = [362; (1, 1, 1, 2, 3, 3, 1, 2, 2, 5, 5, 30, 38, 7, 4, 2, 2, 1, 1, 2, 3, 19, 1, 5, …)]
Representations
- In words
- one hundred thirty-one thousand five hundred
- Ordinal
- 131500th
- Binary
- 100000000110101100
- Octal
- 400654
- Hexadecimal
- 0x201AC
- Base64
- AgGs
- One's complement
- 4,294,835,795 (32-bit)
- Scientific notation
- 1.315 × 10⁵
- As a duration
- 131,500 s = 1 day, 12 hours, 31 minutes, 40 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢
- Greek (Milesian)
- ͵ρλαφʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋯·𝋠
- Chinese
- 一十三萬一千五百
- Chinese (financial)
- 壹拾參萬壹仟伍佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131500, here are decompositions:
- 3 + 131497 = 131500
- 11 + 131489 = 131500
- 23 + 131477 = 131500
- 53 + 131447 = 131500
- 59 + 131441 = 131500
- 137 + 131363 = 131500
- 179 + 131321 = 131500
- 197 + 131303 = 131500
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 86 AC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.172.
- Address
- 0.2.1.172
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.172
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 131,500 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 131500 first appears in π at position 449,686 of the decimal expansion (the 449,686ordinal-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.