131,380
131,380 is a composite number, even.
131,380 (one hundred thirty-one thousand three hundred eighty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,569. Its proper divisors sum to 144,560, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20134.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 83,131
- Square (n²)
- 17,260,704,400
- Cube (n³)
- 2,267,711,344,072,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 275,940
- φ(n) — Euler's totient
- 52,544
- Sum of prime factors
- 6,578
Primality
Prime factorization: 2 2 × 5 × 6569
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,380 = [362; (2, 6, 2, 2, 8, 1, 1, 1, 9, 1, 1, 3, 1, 44, 1, 1, 8, 8, 36, 8, 8, 1, 1, 44, …)]
Period length 38 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand three hundred eighty
- Ordinal
- 131380th
- Binary
- 100000000100110100
- Octal
- 400464
- Hexadecimal
- 0x20134
- Base64
- AgE0
- One's complement
- 4,294,835,915 (32-bit)
- Scientific notation
- 1.3138 × 10⁵
- As a duration
- 131,380 s = 1 day, 12 hours, 29 minutes, 40 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλατπʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋩·𝋠
- Chinese
- 一十三萬一千三百八十
- Chinese (financial)
- 壹拾參萬壹仟參佰捌拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131380, here are decompositions:
- 17 + 131363 = 131380
- 23 + 131357 = 131380
- 59 + 131321 = 131380
- 83 + 131297 = 131380
- 113 + 131267 = 131380
- 131 + 131249 = 131380
- 149 + 131231 = 131380
- 167 + 131213 = 131380
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 84 B4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.52.
- Address
- 0.2.1.52
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.52
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 131,380 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 131380 first appears in π at position 178,334 of the decimal expansion (the 178,334ordinal-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.