311131301112 has 48 divisors (see below), whose sum is σ = 843165506040. Its totient is φ = 103646651328.

The previous prime is 311131301087. The next prime is 311131301147. The reversal of 311131301112 is 211103131113.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1210843 + ... + 1445130.

Almost surely, 2^311131301112 is an apocalyptic number.

It is an amenable number.

311131301112 is an abundant number, since it is smaller than the sum of its proper divisors (532034204928).

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

311131301112 is a wasteful number, since it uses less digits than its factorization.

311131301112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657612 (or 2657605 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 311131301112 its reverse (211103131113), we get a palindrome (522234432225).

The spelling of 311131301112 in words is "three hundred eleven billion, one hundred thirty-one million, three hundred one thousand, one hundred twelve".