31938475 has 12 divisors (see below), whose sum is σ = 39780936. Its totient is φ = 25436480.

The previous prime is 31938469. The next prime is 31938493. The reversal of 31938475 is 57483913.

It is not a de Polignac number, because 31938475 - 2⁵ = 31938443 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 3084 + ... + 8566.

It is an arithmetic number, because the mean of its divisors is an integer number (3315078).

Almost surely, 2^31938475 is an apocalyptic number.

31938475 is a deficient number, since it is larger than the sum of its proper divisors (7842461).

31938475 is a wasteful number, since it uses less digits than its factorization.

31938475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726 (or 5721 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 31938475 is about 5651.4135399916. The cubic root of 31938475 is about 317.2766114173.

The spelling of 31938475 in words is "thirty-one million, nine hundred thirty-eight thousand, four hundred seventy-five".