31130323220112 has 80 divisors (see below), whose sum is σ = 85489835925312. Its totient is φ = 9727465984000.

The previous prime is 31130323220099. The next prime is 31130323220177. The reversal of 31130323220112 is 21102232303113.

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

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, 75791013 + ... + 76200644.

Almost surely, 2^{31130323220112} is an apocalyptic number.

It is an amenable number.

31130323220112 is an abundant number, since it is smaller than the sum of its proper divisors (54359512705200).

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

31130323220112 is a wasteful number, since it uses less digits than its factorization.

31130323220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151991936 (or 151991930 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31130323220112 its reverse (21102232303113), we get a palindrome (52232555523225).

The spelling of 31130323220112 in words is "thirty-one trillion, one hundred thirty billion, three hundred twenty-three million, two hundred twenty thousand, one hundred twelve".