31985468 has 6 divisors (see below), whose sum is σ = 55974576. Its totient is φ = 15992732.

The previous prime is 31985431. The next prime is 31985477. The reversal of 31985468 is 86458913.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3998180 + ... + 3998187.

It is an arithmetic number, because the mean of its divisors is an integer number (9329096).

Almost surely, 2^31985468 is an apocalyptic number.

It is an amenable number.

31985468 is a deficient number, since it is larger than the sum of its proper divisors (23989108).

31985468 is a wasteful number, since it uses less digits than its factorization.

31985468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7996371 (or 7996369 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 31985468 is about 5655.5696441649. The cubic root of 31985468 is about 317.4321445501.

The spelling of 31985468 in words is "thirty-one million, nine hundred eighty-five thousand, four hundred sixty-eight".