31090826172 has 48 divisors (see below), whose sum is σ = 83170483200. Its totient is φ = 8855063232.

The previous prime is 31090826171. The next prime is 31090826213. The reversal of 31090826172 is 27162809013.

It is a self number, because there is not a number n which added to its sum of digits gives 31090826172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31090826171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557172 + ... + 610427.

It is an arithmetic number, because the mean of its divisors is an integer number (1732718400).

Almost surely, 2^31090826172 is an apocalyptic number.

It is an amenable number.

31090826172 is an abundant number, since it is smaller than the sum of its proper divisors (52079657028).

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

31090826172 is a wasteful number, since it uses less digits than its factorization.

31090826172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167930 (or 1167928 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 31090826172 in words is "thirty-one billion, ninety million, eight hundred twenty-six thousand, one hundred seventy-two".