311531696 has 40 divisors (see below), whose sum is σ = 693479424. Its totient is φ = 132805440.

The previous prime is 311531683. The next prime is 311531707. The reversal of 311531696 is 696135113.

311531696 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×311531696² = 194103995225272832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14111 + ... + 28673.

Almost surely, 2^311531696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311531696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (346739712).

311531696 is an abundant number, since it is smaller than the sum of its proper divisors (381947728).

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

311531696 is a wasteful number, since it uses less digits than its factorization.

311531696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14769 (or 14763 counting only the distinct ones).

The product of its digits is 14580, while the sum is 35.

The square root of 311531696 is about 17650.2605079925. The cubic root of 311531696 is about 677.9027772521.

The spelling of 311531696 in words is "three hundred eleven million, five hundred thirty-one thousand, six hundred ninety-six".