131630992 has 20 divisors (see below), whose sum is σ = 261256716. Its totient is φ = 64209920.

The previous prime is 131630981. The next prime is 131630999. The reversal of 131630992 is 299036131.

131630992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2944656 + 128686336 = 1716^2 + 11344^2 .

It is not an unprimeable number, because it can be changed into a prime (131630999) 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 3 ways as a sum of consecutive naturals, for example, 99673 + ... + 100984.

Almost surely, 2^131630992 is an apocalyptic number.

It is an amenable number.

131630992 is a deficient number, since it is larger than the sum of its proper divisors (129625724).

131630992 is a wasteful number, since it uses less digits than its factorization.

131630992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200706 (or 200700 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 131630992 is about 11473.0550421411. The cubic root of 131630992 is about 508.6894352862.

The spelling of 131630992 in words is "one hundred thirty-one million, six hundred thirty thousand, nine hundred ninety-two".