311220010120 has 64 divisors (see below), whose sum is σ = 704759454000. Its totient is φ = 123687997440.

The previous prime is 311220010117. The next prime is 311220010133. The reversal of 311220010120 is 21010022113.

It can be written as a sum of positive squares in 8 ways, for example, as 128311538436 + 182908471684 = 358206^2 + 427678^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 311220010120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3883092 + ... + 3962428.

Almost surely, 2^311220010120 is an apocalyptic number.

It is an amenable number.

311220010120 is an abundant number, since it is smaller than the sum of its proper divisors (393539443880).

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

311220010120 is a wasteful number, since it uses less digits than its factorization.

311220010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79978 (or 79974 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 311220010120 its reverse (21010022113), we get a palindrome (332230032233).

The spelling of 311220010120 in words is "three hundred eleven billion, two hundred twenty million, ten thousand, one hundred twenty".