131613536 has 24 divisors (see below), whose sum is σ = 264630240. Its totient is φ = 64405888.

The previous prime is 131613523. The next prime is 131613553. The reversal of 131613536 is 635316131.

It is a junction number, because it is equal to n+sod(n) for n = 131613499 and 131613508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42251 + ... + 45258.

It is an arithmetic number, because the mean of its divisors is an integer number (11026260).

Almost surely, 2^131613536 is an apocalyptic number.

131613536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131613536 is an abundant number, since it is smaller than the sum of its proper divisors (133016704).

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

131613536 is an equidigital number, since it uses as much as digits as its factorization.

131613536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87566 (or 87558 counting only the distinct ones).

The product of its digits is 4860, while the sum is 29.

The square root of 131613536 is about 11472.2942779550. The cubic root of 131613536 is about 508.6669479899. Note that the first 3 decimals are identical.

Adding to 131613536 its reverse (635316131), we get a palindrome (766929667).

The spelling of 131613536 in words is "one hundred thirty-one million, six hundred thirteen thousand, five hundred thirty-six".