31683696 has 80 divisors (see below), whose sum is σ = 93208320. Its totient is φ = 9180160.

The previous prime is 31683677. The next prime is 31683709. The reversal of 31683696 is 69638613.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10840 + ... + 13448.

It is an arithmetic number, because the mean of its divisors is an integer number (1165104).

Almost surely, 2^31683696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31683696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46604160).

31683696 is an abundant number, since it is smaller than the sum of its proper divisors (61524624).

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

31683696 is a wasteful number, since it uses less digits than its factorization.

31683696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654 (or 2648 counting only the distinct ones).

The product of its digits is 139968, while the sum is 42.

The square root of 31683696 is about 5628.8272313156. The cubic root of 31683696 is about 316.4307004199.

The spelling of 31683696 in words is "thirty-one million, six hundred eighty-three thousand, six hundred ninety-six".