31922012 has 12 divisors (see below), whose sum is σ = 55904016. Its totient is φ = 15949440.

The previous prime is 31922003. The next prime is 31922017. The reversal of 31922012 is 21022913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31922017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7337 + ... + 10847.

It is an arithmetic number, because the mean of its divisors is an integer number (4658668).

Almost surely, 2^31922012 is an apocalyptic number.

It is an amenable number.

31922012 is a deficient number, since it is larger than the sum of its proper divisors (23982004).

31922012 is a wasteful number, since it uses less digits than its factorization.

31922012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5788 (or 5786 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 31922012 is about 5649.9568139942. The cubic root of 31922012 is about 317.2220876015. Note that the first 3 decimals are identical.

Adding to 31922012 its reverse (21022913), we get a palindrome (52944925).

The spelling of 31922012 in words is "thirty-one million, nine hundred twenty-two thousand, twelve".