31662668 has 12 divisors (see below), whose sum is σ = 55490400. Its totient is φ = 15808272.

The previous prime is 31662667. The next prime is 31662679. The reversal of 31662668 is 86626613.

It is not an unprimeable number, because it can be changed into a prime (31662667) 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, 2468 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (4624200).

Almost surely, 2^31662668 is an apocalyptic number.

It is an amenable number.

31662668 is a deficient number, since it is larger than the sum of its proper divisors (23827732).

31662668 is a wasteful number, since it uses less digits than its factorization.

31662668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536 (or 11534 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 31662668 is about 5626.9590366378. The cubic root of 31662668 is about 316.3606814703.

The spelling of 31662668 in words is "thirty-one million, six hundred sixty-two thousand, six hundred sixty-eight".