31789996 has 24 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 13459152.

The previous prime is 31789991. The next prime is 31790041. The reversal of 31789996 is 69998713.

It is not an unprimeable number, because it can be changed into a prime (31789991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4516 + ... + 9163.

It is an arithmetic number, because the mean of its divisors is an integer number (2681280).

Almost surely, 2^31789996 is an apocalyptic number.

It is an amenable number.

31789996 is an abundant number, since it is smaller than the sum of its proper divisors (32560724).

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

31789996 is a wasteful number, since it uses less digits than its factorization.

31789996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13773 (or 13771 counting only the distinct ones).

The product of its digits is 734832, while the sum is 52.

The square root of 31789996 is about 5638.2617888849. The cubic root of 31789996 is about 316.7841843914.

The spelling of 31789996 in words is "thirty-one million, seven hundred eighty-nine thousand, nine hundred ninety-six".