131,378
131,378 is a composite number, even.
131,378 (one hundred thirty-one thousand three hundred seventy-eight) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 13 × 31 × 163. Written other ways, in hexadecimal, 0x20132.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 504
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 873,131
- Square (n²)
- 17,260,178,884
- Cube (n³)
- 2,267,607,781,422,152
- Divisor count
- 16
- σ(n) — sum of divisors
- 220,416
- φ(n) — Euler's totient
- 58,320
- Sum of prime factors
- 209
Primality
Prime factorization: 2 × 13 × 31 × 163
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,378 = [362; (2, 5, 1, 10, 1, 5, 2, 724)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand three hundred seventy-eight
- Ordinal
- 131378th
- Binary
- 100000000100110010
- Octal
- 400462
- Hexadecimal
- 0x20132
- Base64
- AgEy
- One's complement
- 4,294,835,917 (32-bit)
- Scientific notation
- 1.31378 × 10⁵
- As a duration
- 131,378 s = 1 day, 12 hours, 29 minutes, 38 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλατοηʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋨·𝋲
- Chinese
- 一十三萬一千三百七十八
- Chinese (financial)
- 壹拾參萬壹仟參佰柒拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131378, here are decompositions:
- 7 + 131371 = 131378
- 61 + 131317 = 131378
- 67 + 131311 = 131378
- 127 + 131251 = 131378
- 157 + 131221 = 131378
- 229 + 131149 = 131378
- 277 + 131101 = 131378
- 307 + 131071 = 131378
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 84 B2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.50.
- Address
- 0.2.1.50
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.50
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 131,378 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 131378 first appears in π at position 294,912 of the decimal expansion (the 294,912ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.