31013112111979 has 2 divisors, whose sum is σ = 31013112111980. Its totient is φ = 31013112111978.

The previous prime is 31013112111959. The next prime is 31013112112033. The reversal of 31013112111979 is 97911121131013.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31013112111979 - 2⁹ = 31013112111467 is a prime.

It is not a weakly prime, because it can be changed into another prime (31013112111959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506556055989 + 15506556055990.

It is an arithmetic number, because the mean of its divisors is an integer number (15506556055990).

Almost surely, 2^{31013112111979} is an apocalyptic number.

31013112111979 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013112111979 is an equidigital number, since it uses as much as digits as its factorization.

31013112111979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 40.

The spelling of 31013112111979 in words is "thirty-one trillion, thirteen billion, one hundred twelve million, one hundred eleven thousand, nine hundred seventy-nine".