311330012 has 24 divisors (see below), whose sum is σ = 630166656. Its totient is φ = 131818608.

The previous prime is 311330011. The next prime is 311330053. The reversal of 311330012 is 210033113.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311330011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 64658 + ... + 69305.

It is an arithmetic number, because the mean of its divisors is an integer number (26256944).

Almost surely, 2^311330012 is an apocalyptic number.

It is an amenable number.

311330012 is an abundant number, since it is smaller than the sum of its proper divisors (318836644).

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

311330012 is a wasteful number, since it uses less digits than its factorization.

311330012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134057 (or 134055 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 311330012 is about 17644.5462395608. The cubic root of 311330012 is about 677.7564554272.

Adding to 311330012 its reverse (210033113), we get a palindrome (521363125).

The spelling of 311330012 in words is "three hundred eleven million, three hundred thirty thousand, twelve".