31311021414317 has 2 divisors, whose sum is σ = 31311021414318. Its totient is φ = 31311021414316.

The previous prime is 31311021414311. The next prime is 31311021414359. The reversal of 31311021414317 is 71341412011313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25311906836836 + 5999114577481 = 5031094^2 + 2449309^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311021414317 - 2¹⁰ = 31311021413293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31311021414311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655510707158 + 15655510707159.

It is an arithmetic number, because the mean of its divisors is an integer number (15655510707159).

Almost surely, 2^{31311021414317} is an apocalyptic number.

It is an amenable number.

31311021414317 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311021414317 is an equidigital number, since it uses as much as digits as its factorization.

31311021414317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The spelling of 31311021414317 in words is "thirty-one trillion, three hundred eleven billion, twenty-one million, four hundred fourteen thousand, three hundred seventeen".