3121331231112 has 32 divisors (see below), whose sum is σ = 7819351368000. Its totient is φ = 1038307305024.

The previous prime is 3121331231059. The next prime is 3121331231159. The reversal of 3121331231112 is 2111321331213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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, 133515487 + ... + 133538862.

It is an arithmetic number, because the mean of its divisors is an integer number (244354730250).

Almost surely, 2^{3121331231112} is an apocalyptic number.

It is an amenable number.

3121331231112 is an abundant number, since it is smaller than the sum of its proper divisors (4698020136888).

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

3121331231112 is a wasteful number, since it uses less digits than its factorization.

3121331231112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267054845 (or 267054841 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

Adding to 3121331231112 its reverse (2111321331213), we get a palindrome (5232652562325).

The spelling of 3121331231112 in words is "three trillion, one hundred twenty-one billion, three hundred thirty-one million, two hundred thirty-one thousand, one hundred twelve".