31204668 has 24 divisors (see below), whose sum is σ = 79430400. Its totient is φ = 9455920.

The previous prime is 31204661. The next prime is 31204681. The reversal of 31204668 is 86640213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204661) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 118068 + ... + 118331.

It is an arithmetic number, because the mean of its divisors is an integer number (3309600).

Almost surely, 2^31204668 is an apocalyptic number.

It is an amenable number.

31204668 is an abundant number, since it is smaller than the sum of its proper divisors (48225732).

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

31204668 is a wasteful number, since it uses less digits than its factorization.

31204668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236417 (or 236415 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 31204668 is about 5586.1138549084. The cubic root of 31204668 is about 314.8278827920.

The spelling of 31204668 in words is "thirty-one million, two hundred four thousand, six hundred sixty-eight".