311332021112 has 64 divisors (see below), whose sum is σ = 704511475200. Its totient is φ = 125998899840.

The previous prime is 311332021109. The next prime is 311332021129. The reversal of 311332021112 is 211120233113.

It is a happy number.

It is a congruent number.

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, 139523 + ... + 801330.

It is an arithmetic number, because the mean of its divisors is an integer number (11007991800).

Almost surely, 2^311332021112 is an apocalyptic number.

It is an amenable number.

311332021112 is an abundant number, since it is smaller than the sum of its proper divisors (393179454088).

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

311332021112 is a wasteful number, since it uses less digits than its factorization.

311332021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941196 (or 941192 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311332021112 its reverse (211120233113), we get a palindrome (522452254225).

The spelling of 311332021112 in words is "three hundred eleven billion, three hundred thirty-two million, twenty-one thousand, one hundred twelve".