131115350304520 has 16 divisors (see below), whose sum is σ = 295009538185260. Its totient is φ = 52446140121792.

The previous prime is 131115350304509. The next prime is 131115350304557. The reversal of 131115350304520 is 25403053511131.

It can be written as a sum of positive squares in 2 ways, for example, as 122878599543844 + 8236750760676 = 11085062^2 + 2869974^2 .

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, 1638941878767 + ... + 1638941878846.

Almost surely, 2^{131115350304520} is an apocalyptic number.

131115350304520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131115350304520 is an abundant number, since it is smaller than the sum of its proper divisors (163894187880740).

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

131115350304520 is a wasteful number, since it uses less digits than its factorization.

131115350304520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277883757624 (or 3277883757620 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 131115350304520 in words is "one hundred thirty-one trillion, one hundred fifteen billion, three hundred fifty million, three hundred four thousand, five hundred twenty".