131368815 has 24 divisors (see below), whose sum is σ = 230918688. Its totient is φ = 69074880.

The previous prime is 131368771. The next prime is 131368817. The reversal of 131368815 is 518863131.

It is not a de Polignac number, because 131368815 - 2⁷ = 131368687 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131368815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131368817) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 17364 + ... + 23753.

It is an arithmetic number, because the mean of its divisors is an integer number (9621612).

Almost surely, 2^131368815 is an apocalyptic number.

131368815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131368815 is a deficient number, since it is larger than the sum of its proper divisors (99549873).

131368815 is a wasteful number, since it uses less digits than its factorization.

131368815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41199 (or 41196 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 131368815 is about 11461.6235760908. The cubic root of 131368815 is about 508.3514821673.

The spelling of 131368815 in words is "one hundred thirty-one million, three hundred sixty-eight thousand, eight hundred fifteen".