311425931 has 2 divisors, whose sum is σ = 311425932. Its totient is φ = 311425930.

The previous prime is 311425921. The next prime is 311425937. The reversal of 311425931 is 139524113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311425931 - 2¹⁰ = 311424907 is a prime.

It is a super-2 number, since 2×311425931² = 193972220998433522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311425894 and 311425903.

It is not a weakly prime, because it can be changed into another prime (311425937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155712965 + 155712966.

It is an arithmetic number, because the mean of its divisors is an integer number (155712966).

Almost surely, 2^311425931 is an apocalyptic number.

311425931 is a deficient number, since it is larger than the sum of its proper divisors (1).

311425931 is an equidigital number, since it uses as much as digits as its factorization.

311425931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 311425931 is about 17647.2641222372. The cubic root of 311425931 is about 677.8260525789.

It can be divided in two parts, 31142 and 5931, that added together give a palindrome (37073).

The spelling of 311425931 in words is "three hundred eleven million, four hundred twenty-five thousand, nine hundred thirty-one".