31165056313 has 2 divisors, whose sum is σ = 31165056314. Its totient is φ = 31165056312.

The previous prime is 31165056311. The next prime is 31165056317. The reversal of 31165056313 is 31365056113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19141275904 + 12023780409 = 138352^2 + 109653^2 .

It is a cyclic number.

It is not a de Polignac number, because 31165056313 - 2¹ = 31165056311 is a prime.

It is a super-2 number, since 2×31165056313² (a number of 22 digits) contains 22 as substring.

Together with 31165056311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31165056311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15582528156 + 15582528157.

It is an arithmetic number, because the mean of its divisors is an integer number (15582528157).

Almost surely, 2^31165056313 is an apocalyptic number.

It is an amenable number.

31165056313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31165056313 is an equidigital number, since it uses as much as digits as its factorization.

31165056313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 31165056313 in words is "thirty-one billion, one hundred sixty-five million, fifty-six thousand, three hundred thirteen".