31013112077 has 2 divisors, whose sum is σ = 31013112078. Its totient is φ = 31013112076.

The previous prime is 31013112059. The next prime is 31013112113. The reversal of 31013112077 is 77021131013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16676881321 + 14336230756 = 129139^2 + 119734^2 .

It is a cyclic number.

It is not a de Polignac number, because 31013112077 - 2¹⁰ = 31013111053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31013112017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506556038 + 15506556039.

It is an arithmetic number, because the mean of its divisors is an integer number (15506556039).

Almost surely, 2^31013112077 is an apocalyptic number.

It is an amenable number.

31013112077 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013112077 is an equidigital number, since it uses as much as digits as its factorization.

31013112077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 26.

The spelling of 31013112077 in words is "thirty-one billion, thirteen million, one hundred twelve thousand, seventy-seven".