311397875713 has 2 divisors, whose sum is σ = 311397875714. Its totient is φ = 311397875712.

The previous prime is 311397875689. The next prime is 311397875743. The reversal of 311397875713 is 317578793113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260940137329 + 50457738384 = 510823^2 + 224628^2 .

It is a cyclic number.

It is not a de Polignac number, because 311397875713 - 2⁵ = 311397875681 is a prime.

It is not a weakly prime, because it can be changed into another prime (311397875743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155698937856 + 155698937857.

It is an arithmetic number, because the mean of its divisors is an integer number (155698937857).

Almost surely, 2^311397875713 is an apocalyptic number.

It is an amenable number.

311397875713 is a deficient number, since it is larger than the sum of its proper divisors (1).

311397875713 is an equidigital number, since it uses as much as digits as its factorization.

311397875713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3333960, while the sum is 55.

The spelling of 311397875713 in words is "three hundred eleven billion, three hundred ninety-seven million, eight hundred seventy-five thousand, seven hundred thirteen".