Base | Representation |
---|---|
bin | 1111100011000… |
… | …11100100100111 |
3 | 100002102121001211 |
4 | 13301203210213 |
5 | 231342300041 |
6 | 20535332251 |
7 | 3142435045 |
oct | 761434447 |
9 | 302377054 |
10 | 130431271 |
11 | 67696a43 |
12 | 37821087 |
13 | 21039b89 |
14 | 13473395 |
15 | b6b6481 |
hex | 7c63927 |
130431271 has 2 divisors, whose sum is σ = 130431272. Its totient is φ = 130431270.
The previous prime is 130431199. The next prime is 130431277. The reversal of 130431271 is 172134031.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 130431271 - 223 = 122042663 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (130431277) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65215635 + 65215636.
It is an arithmetic number, because the mean of its divisors is an integer number (65215636).
Almost surely, 2130431271 is an apocalyptic number.
130431271 is a deficient number, since it is larger than the sum of its proper divisors (1).
130431271 is an equidigital number, since it uses as much as digits as its factorization.
130431271 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 504, while the sum is 22.
The square root of 130431271 is about 11420.6510760114. The cubic root of 130431271 is about 507.1392711057.
The spelling of 130431271 in words is "one hundred thirty million, four hundred thirty-one thousand, two hundred seventy-one".
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