131135320 has 32 divisors (see below), whose sum is σ = 295384320. Its totient is φ = 52395520.

The previous prime is 131135309. The next prime is 131135341. The reversal of 131135320 is 23531131.

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, 61065 + ... + 63175.

It is an arithmetic number, because the mean of its divisors is an integer number (9230760).

Almost surely, 2^131135320 is an apocalyptic number.

131135320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131135320 is an abundant number, since it is smaller than the sum of its proper divisors (164249000).

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

131135320 is a wasteful number, since it uses less digits than its factorization.

131135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3675 (or 3671 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 131135320 is about 11451.4330980886. The cubic root of 131135320 is about 508.0501221548.

Adding to 131135320 its reverse (23531131), we get a palindrome (154666451).

The spelling of 131135320 in words is "one hundred thirty-one million, one hundred thirty-five thousand, three hundred twenty".