31022103312 has 60 divisors (see below), whose sum is σ = 88456915404. Its totient is φ = 10145591040.

The previous prime is 31022103247. The next prime is 31022103349. The reversal of 31022103312 is 21330122013.

31022103312 is a `hidden beast` number, since 310 + 2 + 21 + 0 + 331 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10657671696 + 20364431616 = 103236^2 + 142704^2 .

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

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, 2024739 + ... + 2040002.

Almost surely, 2^31022103312 is an apocalyptic number.

It is an amenable number.

31022103312 is an abundant number, since it is smaller than the sum of its proper divisors (57434812092).

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

31022103312 is a wasteful number, since it uses less digits than its factorization.

31022103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4064808 (or 4064799 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31022103312 its reverse (21330122013), we get a palindrome (52352225325).

The spelling of 31022103312 in words is "thirty-one billion, twenty-two million, one hundred three thousand, three hundred twelve".