31896372 has 24 divisors (see below), whose sum is σ = 74523456. Its totient is φ = 10618048.

The previous prime is 31896367. The next prime is 31896373. The reversal of 31896372 is 27369813.

It is a self number, because there is not a number n which added to its sum of digits gives 31896372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31896373) 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, 11953 + ... + 14375.

It is an arithmetic number, because the mean of its divisors is an integer number (3105144).

Almost surely, 2^31896372 is an apocalyptic number.

It is an amenable number.

31896372 is an abundant number, since it is smaller than the sum of its proper divisors (42627084).

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

31896372 is a wasteful number, since it uses less digits than its factorization.

31896372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527 (or 3525 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 31896372 is about 5647.6873142907. The cubic root of 31896372 is about 317.1371331303.

The spelling of 31896372 in words is "thirty-one million, eight hundred ninety-six thousand, three hundred seventy-two".