31979332 has 36 divisors (see below), whose sum is σ = 70309120. Its totient is φ = 12458160.

The previous prime is 31979287. The next prime is 31979333. The reversal of 31979332 is 23397913.

It is a junction number, because it is equal to n+sod(n) for n = 31979291 and 31979300.

It is not an unprimeable number, because it can be changed into a prime (31979333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1332 + ... + 8107.

Almost surely, 2^31979332 is an apocalyptic number.

It is an amenable number.

31979332 is an abundant number, since it is smaller than the sum of its proper divisors (38329788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31979332 is a wasteful number, since it uses less digits than its factorization.

31979332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9472 (or 9459 counting only the distinct ones).

The product of its digits is 30618, while the sum is 37.

The square root of 31979332 is about 5655.0271440551. The cubic root of 31979332 is about 317.4118448294.

The spelling of 31979332 in words is "thirty-one million, nine hundred seventy-nine thousand, three hundred thirty-two".