131116635 has 24 divisors (see below), whose sum is σ = 244752144. Its totient is φ = 64549440.

The previous prime is 131116619. The next prime is 131116637. The reversal of 131116635 is 536611131.

131116635 is a `hidden beast` number, since 1 + 3 + 11 + 16 + 635 = 666.

It is not a de Polignac number, because 131116635 - 2⁴ = 131116619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131116599 and 131116608.

It is not an unprimeable number, because it can be changed into a prime (131116637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111481 + ... + 112650.

It is an arithmetic number, because the mean of its divisors is an integer number (10198006).

Almost surely, 2^131116635 is an apocalyptic number.

131116635 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131116635 is a deficient number, since it is larger than the sum of its proper divisors (113635509).

131116635 is a wasteful number, since it uses less digits than its factorization.

131116635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224155 (or 224152 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 131116635 is about 11450.6172322718. The cubic root of 131116635 is about 508.0259909305.

Adding to 131116635 its reverse (536611131), we get a palindrome (667727766).

The spelling of 131116635 in words is "one hundred thirty-one million, one hundred sixteen thousand, six hundred thirty-five".