31422726 has 12 divisors (see below), whose sum is σ = 68082612. Its totient is φ = 10474236.

The previous prime is 31422679. The next prime is 31422733. The reversal of 31422726 is 62722413.

It is a self number, because there is not a number n which added to its sum of digits gives 31422726.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 872836 + ... + 872871.

It is an arithmetic number, because the mean of its divisors is an integer number (5673551).

Almost surely, 2^31422726 is an apocalyptic number.

31422726 is an abundant number, since it is smaller than the sum of its proper divisors (36659886).

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

31422726 is a wasteful number, since it uses less digits than its factorization.

31422726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745715 (or 1745712 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 31422726 is about 5605.5977379759. The cubic root of 31422726 is about 315.5595195469.

The spelling of 31422726 in words is "thirty-one million, four hundred twenty-two thousand, seven hundred twenty-six".