31979488 has 12 divisors (see below), whose sum is σ = 62959680. Its totient is φ = 15989728.

The previous prime is 31979473. The next prime is 31979509. The reversal of 31979488 is 88497913.

It is a happy 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 as a sum of consecutive naturals, namely, 499648 + ... + 499711.

It is an arithmetic number, because the mean of its divisors is an integer number (5246640).

Almost surely, 2^31979488 is an apocalyptic number.

It is an amenable number.

31979488 is a deficient number, since it is larger than the sum of its proper divisors (30980192).

31979488 is an equidigital number, since it uses as much as digits as its factorization.

31979488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999369 (or 999361 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 31979488 is about 5655.0409370755. The cubic root of 31979488 is about 317.4123609561.

The spelling of 31979488 in words is "thirty-one million, nine hundred seventy-nine thousand, four hundred eighty-eight".