31967472 has 40 divisors (see below), whose sum is σ = 82900944. Its totient is φ = 10614784.

The previous prime is 31967471. The next prime is 31967489. The reversal of 31967472 is 27476913.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31967472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31967471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12928 + ... + 15200.

Almost surely, 2^31967472 is an apocalyptic number.

It is an amenable number.

31967472 is an abundant number, since it is smaller than the sum of its proper divisors (50933472).

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

31967472 is a wasteful number, since it uses less digits than its factorization.

31967472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577 (or 2571 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 31967472 is about 5653.9784223147. The cubic root of 31967472 is about 317.3726010458.

The spelling of 31967472 in words is "thirty-one million, nine hundred sixty-seven thousand, four hundred seventy-two".