Base | Representation |
---|---|
bin | 11111101010000… |
… | …100000100101111 |
3 | 1101000101201021002 |
4 | 133222010010233 |
5 | 2041431323211 |
6 | 124411430515 |
7 | 16106310032 |
oct | 3752040457 |
9 | 1330351232 |
10 | 531120431 |
11 | 252892706 |
12 | 129a5543b |
13 | 8606005a |
14 | 50777019 |
15 | 3196403b |
hex | 1fa8412f |
531120431 has 2 divisors, whose sum is σ = 531120432. Its totient is φ = 531120430.
The previous prime is 531120383. The next prime is 531120449. The reversal of 531120431 is 134021135.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 531120431 - 214 = 531104047 is a prime.
It is a super-2 number, since 2×5311204312 = 564177824451251522, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (531120451) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265560215 + 265560216.
It is an arithmetic number, because the mean of its divisors is an integer number (265560216).
Almost surely, 2531120431 is an apocalyptic number.
531120431 is a deficient number, since it is larger than the sum of its proper divisors (1).
531120431 is an equidigital number, since it uses as much as digits as its factorization.
531120431 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 360, while the sum is 20.
The square root of 531120431 is about 23046.0502255810. The cubic root of 531120431 is about 809.8371013168.
Adding to 531120431 its reverse (134021135), we get a palindrome (665141566).
The spelling of 531120431 in words is "five hundred thirty-one million, one hundred twenty thousand, four hundred thirty-one".
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