311321331112 has 32 divisors (see below), whose sum is σ = 637318824480. Its totient is φ = 141392986560.

The previous prime is 311321331107. The next prime is 311321331149. The reversal of 311321331112 is 211133123113.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 1351518 + ... + 1565005.

It is an arithmetic number, because the mean of its divisors is an integer number (19916213265).

Almost surely, 2^311321331112 is an apocalyptic number.

It is an amenable number.

311321331112 is an abundant number, since it is smaller than the sum of its proper divisors (325997493368).

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

311321331112 is a wasteful number, since it uses less digits than its factorization.

311321331112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917753 (or 2917749 counting only the distinct ones).

The product of its digits is 324, while the sum is 22.

Adding to 311321331112 its reverse (211133123113), we get a palindrome (522454454225).

The spelling of 311321331112 in words is "three hundred eleven billion, three hundred twenty-one million, three hundred thirty-one thousand, one hundred twelve".