31997462 has 16 divisors (see below), whose sum is σ = 57238272. Its totient is φ = 13116840.

The previous prime is 31997431. The next prime is 31997473. The reversal of 31997462 is 26479913.

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 in 7 ways as a sum of consecutive naturals, for example, 49364 + ... + 50007.

It is an arithmetic number, because the mean of its divisors is an integer number (3577392).

Almost surely, 2^31997462 is an apocalyptic number.

31997462 is a deficient number, since it is larger than the sum of its proper divisors (25240810).

31997462 is a wasteful number, since it uses less digits than its factorization.

31997462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99403.

The product of its digits is 81648, while the sum is 41.

The square root of 31997462 is about 5656.6299154178. The cubic root of 31997462 is about 317.4718167887.

The spelling of 31997462 in words is "thirty-one million, nine hundred ninety-seven thousand, four hundred sixty-two".