Live analysis
131,231
131,231 is a prime, odd.
This number doesn't have a permanent NumberWiki page yet — what you see below is computed live.
Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 11
- Digit product
- 18
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 132,131
- Square (n²)
- 17,221,575,361
- Cube (n³)
- 2,260,004,556,199,391
- Divisor count
- 2
- σ(n) — sum of divisors
- 131,232
- φ(n) — Euler's totient
- 131,230
Primality
131,231 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
All divisors (2)
Aliquot sum (sum of proper divisors):
1
Factor pairs (a × b = 131,231)
First multiples
131,231
·
262,462
(double)
·
393,693
·
524,924
·
656,155
·
787,386
·
918,617
·
1,049,848
·
1,181,079
·
1,312,310
Sums & aliquot sequence
As consecutive integers:
65,615 + 65,616
Continued fraction of √n
√131,231 = [362; (3, 1, 6, 1, 7, 11, 51, 1, 1, 1, 20, 27, 1, 4, 2, 14, 3, 72, 7, 1, 18, 5, 4, 4, …)]
Representations
- In words
- one hundred thirty-one thousand two hundred thirty-one
- Ordinal
- 131231st
- Binary
- 100000000010011111
- Octal
- 400237
- Hexadecimal
- 0x2009F
- Base64
- AgCf
- One's complement
- 4,294,836,064 (32-bit)
- Scientific notation
- 1.31231 × 10⁵
- As a duration
- 131,231 s = 1 day, 12 hours, 27 minutes, 11 seconds
In other bases
ternary (3)
20200000102
quaternary (4)
200002133
quinary (5)
13144411
senary (6)
2451315
septenary (7)
1054412
nonary (9)
220012
undecimal (11)
8a661
duodecimal (12)
63b3b
tridecimal (13)
47969
tetradecimal (14)
35b79
pentadecimal (15)
28d3b
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλασλαʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋡·𝋫
- Chinese
- 一十三萬一千二百三十一
- Chinese (financial)
- 壹拾參萬壹仟貳佰參拾壹
In other modern scripts
Eastern Arabic
١٣١٢٣١
Devanagari
१३१२३१
Bengali
১৩১২৩১
Tamil
௧௩௧௨௩௧
Thai
๑๓๑๒๓๑
Tibetan
༡༣༡༢༣༡
Khmer
១៣១២៣១
Lao
໑໓໑໒໓໑
Burmese
၁၃၁၂၃၁
Also seen as
Prime neighborhood
Unicode codepoint
𠂟
CJK Unified Ideograph-2009F
U+2009F
Other letter (Lo)
UTF-8 encoding: F0 A0 82 9F (4 bytes).
Hex color
#02009F
RGB(2, 0, 159)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.2.0.159.
- Address
- 0.2.0.159
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.0.159
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Possible US patent number
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 131,231 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.