31996296 has 96 divisors (see below), whose sum is σ = 91291200. Its totient is φ = 10497600.

The previous prime is 31996291. The next prime is 31996303. The reversal of 31996296 is 69269913.

It is a happy number.

31996296 is a `hidden beast` number, since 3 + 19 + 9 + 629 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (31996291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 211821 + ... + 211971.

It is an arithmetic number, because the mean of its divisors is an integer number (950950).

Almost surely, 2^31996296 is an apocalyptic number.

31996296 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 31996296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45645600).

31996296 is an abundant number, since it is smaller than the sum of its proper divisors (59294904).

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

31996296 is a wasteful number, since it uses less digits than its factorization.

31996296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 265 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 31996296 is about 5656.5268495783. The cubic root of 31996296 is about 317.4679604762.

The spelling of 31996296 in words is "thirty-one million, nine hundred ninety-six thousand, two hundred ninety-six".