31422660 has 48 divisors (see below), whose sum is σ = 91022400. Its totient is φ = 8089984.

The previous prime is 31422659. The next prime is 31422673. The reversal of 31422660 is 6622413.

It is a super-2 number, since 2×31422660² = 1974767122951200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31422660.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7290 + ... + 10769.

It is an arithmetic number, because the mean of its divisors is an integer number (1896300).

Almost surely, 2^31422660 is an apocalyptic number.

31422660 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31422660 is an abundant number, since it is smaller than the sum of its proper divisors (59599740).

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

31422660 is a wasteful number, since it uses less digits than its factorization.

31422660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18100 (or 18098 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 31422660 is about 5605.5918510002. The cubic root of 31422660 is about 315.5592986140.

The spelling of 31422660 in words is "thirty-one million, four hundred twenty-two thousand, six hundred sixty".