131168636 has 12 divisors (see below), whose sum is σ = 229632480. Its totient is φ = 65559360.

The previous prime is 131168629. The next prime is 131168669. The reversal of 131168636 is 636861131.

It is a happy number.

It is a super-2 number, since 2×131168636² = 34410422140200992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131168596 and 131168605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10685 + ... + 19403.

It is an arithmetic number, because the mean of its divisors is an integer number (19136040).

Almost surely, 2^131168636 is an apocalyptic number.

It is an amenable number.

131168636 is a deficient number, since it is larger than the sum of its proper divisors (98463844).

131168636 is a wasteful number, since it uses less digits than its factorization.

131168636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12484 (or 12482 counting only the distinct ones).

The product of its digits is 15552, while the sum is 35.

The square root of 131168636 is about 11452.8876708016. The cubic root of 131168636 is about 508.0931432739.

The spelling of 131168636 in words is "one hundred thirty-one million, one hundred sixty-eight thousand, six hundred thirty-six".