311137085971 has 2 divisors, whose sum is σ = 311137085972. Its totient is φ = 311137085970.

The previous prime is 311137085939. The next prime is 311137085981. The reversal of 311137085971 is 179580731113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311137085971 - 2⁵ = 311137085939 is a prime.

It is not a weakly prime, because it can be changed into another prime (311137085981) 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, 155568542985 + 155568542986.

It is an arithmetic number, because the mean of its divisors is an integer number (155568542986).

Almost surely, 2^311137085971 is an apocalyptic number.

311137085971 is a deficient number, since it is larger than the sum of its proper divisors (1).

311137085971 is an equidigital number, since it uses as much as digits as its factorization.

311137085971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 46.

The spelling of 311137085971 in words is "three hundred eleven billion, one hundred thirty-seven million, eighty-five thousand, nine hundred seventy-one".