31406680 has 16 divisors (see below), whose sum is σ = 70665120. Its totient is φ = 12562656.

The previous prime is 31406659. The next prime is 31406699. The reversal of 31406680 is 8660413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392544 + ... + 392623.

It is an arithmetic number, because the mean of its divisors is an integer number (4416570).

Almost surely, 2^31406680 is an apocalyptic number.

It is an amenable number.

31406680 is an abundant number, since it is smaller than the sum of its proper divisors (39258440).

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

31406680 is a wasteful number, since it uses less digits than its factorization.

31406680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785178 (or 785174 counting only the distinct ones).

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

The square root of 31406680 is about 5604.1663073110. The cubic root of 31406680 is about 315.5057969622.

The spelling of 31406680 in words is "thirty-one million, four hundred six thousand, six hundred eighty".