31400668 has 12 divisors (see below), whose sum is σ = 59178280. Its totient is φ = 14492592.

The previous prime is 31400659. The next prime is 31400669. The reversal of 31400668 is 86600413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400669) 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, 301878 + ... + 301981.

Almost surely, 2^31400668 is an apocalyptic number.

It is an amenable number.

31400668 is a deficient number, since it is larger than the sum of its proper divisors (27777612).

31400668 is a wasteful number, since it uses less digits than its factorization.

31400668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603876 (or 603874 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 31400668 is about 5603.6298949877. The cubic root of 31400668 is about 315.4856638578.

The spelling of 31400668 in words is "thirty-one million, four hundred thousand, six hundred sixty-eight".