31668196 has 24 divisors (see below), whose sum is σ = 63455616. Its totient is φ = 13546560.

The previous prime is 31668179. The next prime is 31668199. The reversal of 31668196 is 69186613.

It is not an unprimeable number, because it can be changed into a prime (31668199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28320 + ... + 29416.

It is an arithmetic number, because the mean of its divisors is an integer number (2643984).

Almost surely, 2^31668196 is an apocalyptic number.

It is an amenable number.

31668196 is an abundant number, since it is smaller than the sum of its proper divisors (31787420).

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

31668196 is a wasteful number, since it uses less digits than its factorization.

31668196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2137 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 31668196 is about 5627.4502219033. The cubic root of 31668196 is about 316.3790915853.

The spelling of 31668196 in words is "thirty-one million, six hundred sixty-eight thousand, one hundred ninety-six".