130815173 has 4 divisors (see below), whose sum is σ = 130907520. Its totient is φ = 130722828.

The previous prime is 130815131. The next prime is 130815199. The reversal of 130815173 is 371518031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 371518031 = 12539 ⋅29629.

It is a cyclic number.

It is not a de Polignac number, because 130815173 - 2⁶ = 130815109 is a prime.

It is a super-2 number, since 2×130815173² = 34225218974039858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130815473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44015 + ... + 46892.

It is an arithmetic number, because the mean of its divisors is an integer number (32726880).

Almost surely, 2^130815173 is an apocalyptic number.

It is an amenable number.

130815173 is a deficient number, since it is larger than the sum of its proper divisors (92347).

130815173 is an equidigital number, since it uses as much as digits as its factorization.

130815173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92346.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 130815173 is about 11437.4460873046. The cubic root of 130815173 is about 507.6363427991.

The spelling of 130815173 in words is "one hundred thirty million, eight hundred fifteen thousand, one hundred seventy-three".