311938938 has 40 divisors (see below), whose sum is σ = 700431732. Its totient is φ = 103762944.

The previous prime is 311938901. The next prime is 311938969. The reversal of 311938938 is 839839113.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219721329 + 92217609 = 14823^2 + 9603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311938893 and 311938902.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 88506 + ... + 91962.

Almost surely, 2^311938938 is an apocalyptic number.

311938938 is an abundant number, since it is smaller than the sum of its proper divisors (388492794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311938938 is a wasteful number, since it uses less digits than its factorization.

311938938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4028 (or 4019 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 311938938 is about 17661.7931705702. The cubic root of 311938938 is about 678.1980391021.

It can be divided in two parts, 3 and 11938938, that added together give a triangular number (11938941 = T₄₈₈₆).

The spelling of 311938938 in words is "three hundred eleven million, nine hundred thirty-eight thousand, nine hundred thirty-eight".