31965696 has 120 divisors (see below), whose sum is σ = 105540864. Its totient is φ = 9123840.

The previous prime is 31965649. The next prime is 31965697. The reversal of 31965696 is 69656913.

It is not an unprimeable number, because it can be changed into a prime (31965697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31761 + ... + 32751.

Almost surely, 2^31965696 is an apocalyptic number.

31965696 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31965696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52770432).

31965696 is an abundant number, since it is smaller than the sum of its proper divisors (73575168).

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

31965696 is an equidigital number, since it uses as much as digits as its factorization.

31965696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022 (or 1003 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 31965696 is about 5653.8213625830. The cubic root of 31965696 is about 317.3667235695.

The spelling of 31965696 in words is "thirty-one million, nine hundred sixty-five thousand, six hundred ninety-six".