31325668 has 12 divisors (see below), whose sum is σ = 59803632. Its totient is φ = 14238920.

The previous prime is 31325647. The next prime is 31325669. The reversal of 31325668 is 86652313.

It is not an unprimeable number, because it can be changed into a prime (31325669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355930 + ... + 356017.

It is an arithmetic number, because the mean of its divisors is an integer number (4983636).

Almost surely, 2^31325668 is an apocalyptic number.

It is an amenable number.

31325668 is a deficient number, since it is larger than the sum of its proper divisors (28477964).

31325668 is a wasteful number, since it uses less digits than its factorization.

31325668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711962 (or 711960 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 31325668 is about 5596.9338034320. The cubic root of 31325668 is about 315.2342861043.

The spelling of 31325668 in words is "thirty-one million, three hundred twenty-five thousand, six hundred sixty-eight".