31972382 has 8 divisors (see below), whose sum is σ = 51647736. Its totient is φ = 14756472.

The previous prime is 31972379. The next prime is 31972387. The reversal of 31972382 is 28327913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31972387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614828 + ... + 614879.

It is an arithmetic number, because the mean of its divisors is an integer number (6455967).

Almost surely, 2^31972382 is an apocalyptic number.

31972382 is a deficient number, since it is larger than the sum of its proper divisors (19675354).

31972382 is a wasteful number, since it uses less digits than its factorization.

31972382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229722.

The product of its digits is 18144, while the sum is 35.

The square root of 31972382 is about 5654.4126131721. The cubic root of 31972382 is about 317.3888490170.

The spelling of 31972382 in words is "thirty-one million, nine hundred seventy-two thousand, three hundred eighty-two".