311168012 has 24 divisors (see below), whose sum is σ = 580317696. Its totient is φ = 145651088.

The previous prime is 311168009. The next prime is 311168021. The reversal of 311168012 is 210861113.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31658 + ... + 40305.

It is an arithmetic number, because the mean of its divisors is an integer number (24179904).

Almost surely, 2^311168012 is an apocalyptic number.

It is an amenable number.

311168012 is a deficient number, since it is larger than the sum of its proper divisors (269149684).

311168012 is a wasteful number, since it uses less digits than its factorization.

311168012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72037 (or 72035 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 311168012 is about 17639.9549886047. The cubic root of 311168012 is about 677.6388785890.

The spelling of 311168012 in words is "three hundred eleven million, one hundred sixty-eight thousand, twelve".