131830520 has 32 divisors (see below), whose sum is σ = 306849600. Its totient is φ = 50913408.

The previous prime is 131830511. The next prime is 131830537. The reversal of 131830520 is 25038131.

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 7 ways as a sum of consecutive naturals, for example, 55664 + ... + 57983.

It is an arithmetic number, because the mean of its divisors is an integer number (9589050).

Almost surely, 2^131830520 is an apocalyptic number.

131830520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131830520 is an abundant number, since it is smaller than the sum of its proper divisors (175019080).

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

131830520 is a wasteful number, since it uses less digits than its factorization.

131830520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113687 (or 113683 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 131830520 is about 11481.7472537937. The cubic root of 131830520 is about 508.9463315873.

Adding to 131830520 its reverse (25038131), we get a palindrome (156868651).

The spelling of 131830520 in words is "one hundred thirty-one million, eight hundred thirty thousand, five hundred twenty".