31986713432 has 16 divisors (see below), whose sum is σ = 60223950600. Its totient is φ = 15926993280.

The previous prime is 31986713413. The next prime is 31986713441. The reversal of 31986713432 is 23431768913.

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 3 ways as a sum of consecutive naturals, for example, 8293382 + ... + 8297237.

Almost surely, 2^31986713432 is an apocalyptic number.

It is an amenable number.

31986713432 is a deficient number, since it is larger than the sum of its proper divisors (28237237168).

31986713432 is a wasteful number, since it uses less digits than its factorization.

31986713432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16590866 (or 16590862 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The spelling of 31986713432 in words is "thirty-one billion, nine hundred eighty-six million, seven hundred thirteen thousand, four hundred thirty-two".