31776132 has 24 divisors (see below), whose sum is σ = 78047200. Its totient is φ = 10034496.

The previous prime is 31776119. The next prime is 31776139. The reversal of 31776132 is 23167713.

It is a self number, because there is not a number n which added to its sum of digits gives 31776132.

It is not an unprimeable number, because it can be changed into a prime (31776139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69457 + ... + 69912.

Almost surely, 2^31776132 is an apocalyptic number.

It is an amenable number.

31776132 is an abundant number, since it is smaller than the sum of its proper divisors (46271068).

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

31776132 is a wasteful number, since it uses less digits than its factorization.

31776132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139395 (or 139393 counting only the distinct ones).

The product of its digits is 5292, while the sum is 30.

The square root of 31776132 is about 5637.0321978857. The cubic root of 31776132 is about 316.7381265630.

The spelling of 31776132 in words is "thirty-one million, seven hundred seventy-six thousand, one hundred thirty-two".