31696960 has 28 divisors (see below), whose sum is σ = 75479148. Its totient is φ = 12678656.

The previous prime is 31696949. The next prime is 31696961. The reversal of 31696960 is 6969613.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3564544 + 28132416 = 1888^2 + 5304^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31696961) 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, 49207 + ... + 49846.

Almost surely, 2^31696960 is an apocalyptic number.

It is an amenable number.

31696960 is an abundant number, since it is smaller than the sum of its proper divisors (43782188).

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

31696960 is an equidigital number, since it uses as much as digits as its factorization.

31696960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99070 (or 99060 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 31696960 is about 5630.0053285943. The cubic root of 31696960 is about 316.4748509009.

The spelling of 31696960 in words is "thirty-one million, six hundred ninety-six thousand, nine hundred sixty".