31415668 has 12 divisors (see below), whose sum is σ = 55373920. Its totient is φ = 15594552.

The previous prime is 31415663. The next prime is 31415669. The reversal of 31415668 is 86651413.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31415663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27696 + ... + 28807.

Almost surely, 2^31415668 is an apocalyptic number.

It is an amenable number.

31415668 is a deficient number, since it is larger than the sum of its proper divisors (23958252).

31415668 is a wasteful number, since it uses less digits than its factorization.

31415668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56646 (or 56644 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 31415668 is about 5604.9681533440. The cubic root of 31415668 is about 315.5358913628.

The spelling of 31415668 in words is "thirty-one million, four hundred fifteen thousand, six hundred sixty-eight".