31311012983 has 2 divisors, whose sum is σ = 31311012984. Its totient is φ = 31311012982.

The previous prime is 31311012977. The next prime is 31311013021. The reversal of 31311012983 is 38921011313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31311012983 - 2¹² = 31311008887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31311012683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655506491 + 15655506492.

It is an arithmetic number, because the mean of its divisors is an integer number (15655506492).

Almost surely, 2^31311012983 is an apocalyptic number.

31311012983 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311012983 is an equidigital number, since it uses as much as digits as its factorization.

31311012983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 31311012983 in words is "thirty-one billion, three hundred eleven million, twelve thousand, nine hundred eighty-three".