311389374 has 48 divisors (see below), whose sum is σ = 671543568. Its totient is φ = 95925504.

The previous prime is 311389349. The next prime is 311389381. The reversal of 311389374 is 473983113.

It is a happy number.

It is a super-2 number, since 2×311389374² = 193926684480223752, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 354624 + ... + 355500.

It is an arithmetic number, because the mean of its divisors is an integer number (13990491).

Almost surely, 2^311389374 is an apocalyptic number.

311389374 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

311389374 is an abundant number, since it is smaller than the sum of its proper divisors (360154194).

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

311389374 is a wasteful number, since it uses less digits than its factorization.

311389374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 958 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 311389374 is about 17646.2283222223. The cubic root of 311389374 is about 677.7995291436.

The spelling of 311389374 in words is "three hundred eleven million, three hundred eighty-nine thousand, three hundred seventy-four".