31668252 has 48 divisors (see below), whose sum is σ = 92128512. Its totient is φ = 8225280.

The previous prime is 31668251. The next prime is 31668257. The reversal of 31668252 is 25286613.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31668251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16213 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (1919344).

Almost surely, 2^31668252 is an apocalyptic number.

It is an amenable number.

31668252 is an abundant number, since it is smaller than the sum of its proper divisors (60460260).

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

31668252 is a wasteful number, since it uses less digits than its factorization.

31668252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34298 (or 34296 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 31668252 is about 5627.4551975116. The cubic root of 31668252 is about 316.3792780734.

The spelling of 31668252 in words is "thirty-one million, six hundred sixty-eight thousand, two hundred fifty-two".