31660132 has 12 divisors (see below), whose sum is σ = 63320320. Its totient is φ = 13568616.

The previous prime is 31660129. The next prime is 31660147. The reversal of 31660132 is 23106613.

31660132 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565332 + ... + 565387.

Almost surely, 2^31660132 is an apocalyptic number.

It is an amenable number.

31660132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31660132 is a wasteful number, since it uses less digits than its factorization.

31660132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130730 (or 1130728 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 31660132 is about 5626.7336883844. The cubic root of 31660132 is about 316.3522350131.

Adding to 31660132 its reverse (23106613), we get a palindrome (54766745).

The spelling of 31660132 in words is "thirty-one million, six hundred sixty thousand, one hundred thirty-two".