131,800
131,800 is a composite number, even.
131,800 (one hundred thirty-one thousand eight hundred) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2³ × 5² × 659. Its proper divisors sum to 175,100, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x202D8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 8,131
- Recamán's sequence
- a(228,772) = 131,800
- Square (n²)
- 17,371,240,000
- Cube (n³)
- 2,289,529,432,000,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 306,900
- φ(n) — Euler's totient
- 52,640
- Sum of prime factors
- 675
Primality
Prime factorization: 2 3 × 5 2 × 659
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,800 = [363; (23, 2, 2, 1, 1, 1, 8, 80, 1, 1, 3, 1, 1, 1, 4, 1, 2, 3, 8, 2, 1, 8, 3, 1, …)]
Representations
- In words
- one hundred thirty-one thousand eight hundred
- Ordinal
- 131800th
- Binary
- 100000001011011000
- Octal
- 401330
- Hexadecimal
- 0x202D8
- Base64
- AgLY
- One's complement
- 4,294,835,495 (32-bit)
- Scientific notation
- 1.318 × 10⁵
- As a duration
- 131,800 s = 1 day, 12 hours, 36 minutes, 40 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢
- Greek (Milesian)
- ͵ρλαωʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋪·𝋠
- Chinese
- 一十三萬一千八百
- Chinese (financial)
- 壹拾參萬壹仟捌佰
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131800, here are decompositions:
- 3 + 131797 = 131800
- 17 + 131783 = 131800
- 23 + 131777 = 131800
- 29 + 131771 = 131800
- 41 + 131759 = 131800
- 89 + 131711 = 131800
- 113 + 131687 = 131800
- 173 + 131627 = 131800
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8B 98 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.216.
- Address
- 0.2.2.216
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.216
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 131,800 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.