311120010557 has 2 divisors, whose sum is σ = 311120010558. Its totient is φ = 311120010556.

The previous prime is 311120010511. The next prime is 311120010577. The reversal of 311120010557 is 755010021113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311030405401 + 89605156 = 557701^2 + 9466^2 .

It is an emirp because it is prime and its reverse (755010021113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311120010557 - 2⁶ = 311120010493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311120010577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155560005278 + 155560005279.

It is an arithmetic number, because the mean of its divisors is an integer number (155560005279).

Almost surely, 2^311120010557 is an apocalyptic number.

It is an amenable number.

311120010557 is a deficient number, since it is larger than the sum of its proper divisors (1).

311120010557 is an equidigital number, since it uses as much as digits as its factorization.

311120010557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 26.

The spelling of 311120010557 in words is "three hundred eleven billion, one hundred twenty million, ten thousand, five hundred fifty-seven".