311345012 has 24 divisors (see below), whose sum is σ = 595009632. Its totient is φ = 141372000.

The previous prime is 311345003. The next prime is 311345053. The reversal of 311345012 is 210543113.

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 7 ways as a sum of consecutive naturals, for example, 46262 + ... + 52562.

It is an arithmetic number, because the mean of its divisors is an integer number (24792068).

Almost surely, 2^311345012 is an apocalyptic number.

It is an amenable number.

311345012 is a deficient number, since it is larger than the sum of its proper divisors (283664620).

311345012 is a wasteful number, since it uses less digits than its factorization.

311345012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7439 (or 7437 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 311345012 is about 17644.9712949611. The cubic root of 311345012 is about 677.7673401082.

Adding to 311345012 its reverse (210543113), we get a palindrome (521888125).

The spelling of 311345012 in words is "three hundred eleven million, three hundred forty-five thousand, twelve".