131,506
131,506 is a composite number, even.
131,506 (one hundred thirty-one thousand five hundred six) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 47 × 1,399. Written other ways, in hexadecimal, 0x201B2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 605,131
- Recamán's sequence
- a(229,360) = 131,506
- Square (n²)
- 17,293,828,036
- Cube (n³)
- 2,274,242,149,702,216
- Divisor count
- 8
- σ(n) — sum of divisors
- 201,600
- φ(n) — Euler's totient
- 64,308
- Sum of prime factors
- 1,448
Primality
Prime factorization: 2 × 47 × 1399
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,506 = [362; (1, 1, 1, 3, 6, 1, 1, 1, 2, 1, 4, 12, 1, 39, 2, 1, 2, 2, 7, 1, 10, 1, 4, 2, …)]
Representations
- In words
- one hundred thirty-one thousand five hundred six
- Ordinal
- 131506th
- Binary
- 100000000110110010
- Octal
- 400662
- Hexadecimal
- 0x201B2
- Base64
- AgGy
- One's complement
- 4,294,835,789 (32-bit)
- Scientific notation
- 1.31506 × 10⁵
- As a duration
- 131,506 s = 1 day, 12 hours, 31 minutes, 46 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαφϛʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋯·𝋦
- Chinese
- 一十三萬一千五百零六
- Chinese (financial)
- 壹拾參萬壹仟伍佰零陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131506, here are decompositions:
- 5 + 131501 = 131506
- 17 + 131489 = 131506
- 29 + 131477 = 131506
- 59 + 131447 = 131506
- 149 + 131357 = 131506
- 239 + 131267 = 131506
- 257 + 131249 = 131506
- 293 + 131213 = 131506
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 86 B2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.178.
- Address
- 0.2.1.178
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.178
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 131,506 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.