31922942 has 16 divisors (see below), whose sum is σ = 51131520. Its totient is φ = 14911512.

The previous prime is 31922929. The next prime is 31922951. The reversal of 31922942 is 24922913.

It is a junction number, because it is equal to n+sod(n) for n = 31922899 and 31922908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6092 + ... + 10047.

It is an arithmetic number, because the mean of its divisors is an integer number (3195720).

Almost surely, 2^31922942 is an apocalyptic number.

31922942 is a deficient number, since it is larger than the sum of its proper divisors (19208578).

31922942 is a wasteful number, since it uses less digits than its factorization.

31922942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16207.

The product of its digits is 7776, while the sum is 32.

The square root of 31922942 is about 5650.0391149089. The cubic root of 31922942 is about 317.2251681684.

The spelling of 31922942 in words is "thirty-one million, nine hundred twenty-two thousand, nine hundred forty-two".