31450664 has 32 divisors (see below), whose sum is σ = 67595520. Its totient is φ = 13438656.

The previous prime is 31450621. The next prime is 31450667. The reversal of 31450664 is 46605413.

31450664 = T₁₁₂ + T₁₁₃ + ... + T₅₇₄.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (31450667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25322 + ... + 26534.

It is an arithmetic number, because the mean of its divisors is an integer number (2112360).

Almost surely, 2^31450664 is an apocalyptic number.

It is an amenable number.

31450664 is an abundant number, since it is smaller than the sum of its proper divisors (36144856).

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

31450664 is a wasteful number, since it uses less digits than its factorization.

31450664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 1685 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 31450664 is about 5608.0891576365. The cubic root of 31450664 is about 315.6530133486.

The spelling of 31450664 in words is "thirty-one million, four hundred fifty thousand, six hundred sixty-four".