31103212032112 has 40 divisors (see below), whose sum is σ = 65939493030912. Its totient is φ = 14095111166400.

The previous prime is 31103212032089. The next prime is 31103212032197. The reversal of 31103212032112 is 21123021230113.

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

It is a congruent number.

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, 266894608 + ... + 267011119.

Almost surely, 2^{31103212032112} is an apocalyptic number.

It is an amenable number.

31103212032112 is an abundant number, since it is smaller than the sum of its proper divisors (34836280998800).

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

31103212032112 is a wasteful number, since it uses less digits than its factorization.

31103212032112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533906077 (or 533906071 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 31103212032112 its reverse (21123021230113), we get a palindrome (52226233262225).

The spelling of 31103212032112 in words is "thirty-one trillion, one hundred three billion, two hundred twelve million, thirty-two thousand, one hundred twelve".