130715815 has 4 divisors (see below), whose sum is σ = 156858984. Its totient is φ = 104572648.

The previous prime is 130715807. The next prime is 130715821. The reversal of 130715815 is 518517031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518517031 = 14197 ⋅36523.

It is a cyclic number.

It is not a de Polignac number, because 130715815 - 2³ = 130715807 is a prime.

It is a super-2 number, since 2×130715815² = 34173248582228450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 13071577 + ... + 13071586.

It is an arithmetic number, because the mean of its divisors is an integer number (39214746).

Almost surely, 2^130715815 is an apocalyptic number.

130715815 is a deficient number, since it is larger than the sum of its proper divisors (26143169).

130715815 is an equidigital number, since it uses as much as digits as its factorization.

130715815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26143168.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 130715815 is about 11433.1017226298. The cubic root of 130715815 is about 507.5077886321.

The spelling of 130715815 in words is "one hundred thirty million, seven hundred fifteen thousand, eight hundred fifteen".