311320112 has 20 divisors (see below), whose sum is σ = 604407000. Its totient is φ = 155344128.

The previous prime is 311320103. The next prime is 311320159. The reversal of 311320112 is 211023113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11513 + ... + 27480.

It is an arithmetic number, because the mean of its divisors is an integer number (30220350).

Almost surely, 2^311320112 is an apocalyptic number.

It is an amenable number.

311320112 is a deficient number, since it is larger than the sum of its proper divisors (293086888).

311320112 is a wasteful number, since it uses less digits than its factorization.

311320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39500 (or 39494 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 311320112 is about 17644.2656973874. The cubic root of 311320112 is about 677.7492713463.

Adding to 311320112 its reverse (211023113), we get a palindrome (522343225).

The spelling of 311320112 in words is "three hundred eleven million, three hundred twenty thousand, one hundred twelve".