31696272 has 100 divisors (see below), whose sum is σ = 94360156. Its totient is φ = 10264320.

The previous prime is 31696261. The next prime is 31696297. The reversal of 31696272 is 27269613.

It can be written as a sum of positive squares in 2 ways, for example, as 26873856 + 4822416 = 5184^2 + 2196^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47622 + ... + 48282.

Almost surely, 2^31696272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31696272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47180078).

31696272 is an abundant number, since it is smaller than the sum of its proper divisors (62663884).

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

31696272 is a wasteful number, since it uses less digits than its factorization.

31696272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718 (or 703 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 31696272 is about 5629.9442270772. The cubic root of 31696272 is about 316.4725611306.

The spelling of 31696272 in words is "thirty-one million, six hundred ninety-six thousand, two hundred seventy-two".