311310021312320 has 56 divisors (see below), whose sum is σ = 741349558903200. Its totient is φ = 124516857549312.

The previous prime is 311310021312299. The next prime is 311310021312347. The reversal of 311310021312320 is 23213120013113.

It is a super-2 number, since 2×311310021312320² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 22350710 + ... + 33498869.

Almost surely, 2^{311310021312320} is an apocalyptic number.

It is an amenable number.

311310021312320 is an abundant number, since it is smaller than the sum of its proper divisors (430039537590880).

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

311310021312320 is a wasteful number, since it uses less digits than its factorization.

311310021312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55867015 (or 55867005 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 311310021312320 its reverse (23213120013113), we get a palindrome (334523141325433).

The spelling of 311310021312320 in words is "three hundred eleven trillion, three hundred ten billion, twenty-one million, three hundred twelve thousand, three hundred twenty".