31016962681 has 2 divisors, whose sum is σ = 31016962682. Its totient is φ = 31016962680.

The previous prime is 31016962679. The next prime is 31016962703. The reversal of 31016962681 is 18626961013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26828802025 + 4188160656 = 163795^2 + 64716^2 .

It is a cyclic number.

It is not a de Polignac number, because 31016962681 - 2¹ = 31016962679 is a prime.

It is a super-2 number, since 2×31016962681² (a number of 22 digits) contains 22 as substring.

Together with 31016962679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31016962981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15508481340 + 15508481341.

It is an arithmetic number, because the mean of its divisors is an integer number (15508481341).

Almost surely, 2^31016962681 is an apocalyptic number.

It is an amenable number.

31016962681 is a deficient number, since it is larger than the sum of its proper divisors (1).

31016962681 is an equidigital number, since it uses as much as digits as its factorization.

31016962681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 31016962681 in words is "thirty-one billion, sixteen million, nine hundred sixty-two thousand, six hundred eighty-one".