131044520 has 32 divisors (see below), whose sum is σ = 310370400. Its totient is φ = 49658688.

The previous prime is 131044519. The next prime is 131044553. The reversal of 131044520 is 25440131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 131044492 and 131044501.

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, 85454 + ... + 86973.

It is an arithmetic number, because the mean of its divisors is an integer number (9699075).

Almost surely, 2^131044520 is an apocalyptic number.

131044520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131044520 is an abundant number, since it is smaller than the sum of its proper divisors (179325880).

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

131044520 is a wasteful number, since it uses less digits than its factorization.

131044520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172457 (or 172453 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 131044520 is about 11447.4678422785. The cubic root of 131044520 is about 507.9328346525.

Adding to 131044520 its reverse (25440131), we get a palindrome (156484651).

The spelling of 131044520 in words is "one hundred thirty-one million, forty-four thousand, five hundred twenty".