31868292 has 12 divisors (see below), whose sum is σ = 74359376. Its totient is φ = 10622760.

The previous prime is 31868273. The next prime is 31868297. The reversal of 31868292 is 29286813.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 31868292.

It is not an unprimeable number, because it can be changed into a prime (31868297) 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 3 ways as a sum of consecutive naturals, for example, 1327834 + ... + 1327857.

Almost surely, 2^31868292 is an apocalyptic number.

It is an amenable number.

31868292 is an abundant number, since it is smaller than the sum of its proper divisors (42491084).

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

31868292 is a wasteful number, since it uses less digits than its factorization.

31868292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2655698 (or 2655696 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 31868292 is about 5645.2007935945. The cubic root of 31868292 is about 317.0440418198.

The spelling of 31868292 in words is "thirty-one million, eight hundred sixty-eight thousand, two hundred ninety-two".