31725696 has 32 divisors (see below), whose sum is σ = 84272400. Its totient is φ = 10575104.

The previous prime is 31725667. The next prime is 31725697. The reversal of 31725696 is 69652713.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (31725697) 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, 40926 + ... + 41693.

Almost surely, 2^31725696 is an apocalyptic number.

It is an amenable number.

31725696 is an abundant number, since it is smaller than the sum of its proper divisors (52546704).

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

31725696 is an equidigital number, since it uses as much as digits as its factorization.

31725696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82636 (or 82624 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 31725696 is about 5632.5567906591. The cubic root of 31725696 is about 316.5704591703.

The spelling of 31725696 in words is "thirty-one million, seven hundred twenty-five thousand, six hundred ninety-six".