31984475 has 12 divisors (see below), whose sum is σ = 40584456. Its totient is φ = 24991680.

The previous prime is 31984471. The next prime is 31984483. The reversal of 31984475 is 57448913.

It is not a de Polignac number, because 31984475 - 2² = 31984471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31984471) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 13802 + ... + 15951.

It is an arithmetic number, because the mean of its divisors is an integer number (3382038).

Almost surely, 2^31984475 is an apocalyptic number.

31984475 is a deficient number, since it is larger than the sum of its proper divisors (8599981).

31984475 is a wasteful number, since it uses less digits than its factorization.

31984475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29806 (or 29801 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 31984475 is about 5655.4818539184. The cubic root of 31984475 is about 317.4288595856.

The spelling of 31984475 in words is "thirty-one million, nine hundred eighty-four thousand, four hundred seventy-five".