131578136 has 32 divisors (see below), whose sum is σ = 256080000. Its totient is φ = 63313920.

The previous prime is 131578121. The next prime is 131578189. The reversal of 131578136 is 631875131.

131578136 is nontrivially palindromic in base 6.

131578136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 131578096 and 131578105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46490 + ... + 49238.

It is an arithmetic number, because the mean of its divisors is an integer number (8002500).

Almost surely, 2^131578136 is an apocalyptic number.

It is an amenable number.

131578136 is a deficient number, since it is larger than the sum of its proper divisors (124501864).

131578136 is a wasteful number, since it uses less digits than its factorization.

131578136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2979 (or 2975 counting only the distinct ones).

The product of its digits is 15120, while the sum is 35.

The square root of 131578136 is about 11470.7513267440. The cubic root of 131578136 is about 508.6213386370.

The spelling of 131578136 in words is "one hundred thirty-one million, five hundred seventy-eight thousand, one hundred thirty-six".