31972984 has 16 divisors (see below), whose sum is σ = 60018120. Its totient is φ = 15968160.

The previous prime is 31972981. The next prime is 31972987. The reversal of 31972984 is 48927913.

It is an interprime number because it is at equal distance from previous prime (31972981) and next prime (31972987).

It is a self number, because there is not a number n which added to its sum of digits gives 31972984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31972981) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7662 + ... + 11074.

Almost surely, 2^31972984 is an apocalyptic number.

It is an amenable number.

31972984 is a deficient number, since it is larger than the sum of its proper divisors (28045136).

31972984 is a wasteful number, since it uses less digits than its factorization.

31972984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4590 (or 4586 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 31972984 is about 5654.4658456834. The cubic root of 31972984 is about 317.3908410163.

The spelling of 31972984 in words is "thirty-one million, nine hundred seventy-two thousand, nine hundred eighty-four".