131302520 has 16 divisors (see below), whose sum is σ = 295430760. Its totient is φ = 52520992.

The previous prime is 131302511. The next prime is 131302547. The reversal of 131302520 is 25203131.

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, 1641242 + ... + 1641321.

Almost surely, 2^131302520 is an apocalyptic number.

131302520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131302520 is an abundant number, since it is smaller than the sum of its proper divisors (164128240).

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

131302520 is a wasteful number, since it uses less digits than its factorization.

131302520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282574 (or 3282570 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 131302520 is about 11458.7311688511. The cubic root of 131302520 is about 508.2659549383.

Adding to 131302520 its reverse (25203131), we get a palindrome (156505651).

The spelling of 131302520 in words is "one hundred thirty-one million, three hundred two thousand, five hundred twenty".