130810765 has 4 divisors (see below), whose sum is σ = 156972924. Its totient is φ = 104648608.

The previous prime is 130810741. The next prime is 130810769. The reversal of 130810765 is 567018031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32046921 + 98763844 = 5661^2 + 9938^2 .

It is a cyclic number.

It is not a de Polignac number, because 130810765 - 2²⁵ = 97256333 is a prime.

It is a super-2 number, since 2×130810765² = 34222912479770450, 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 not an unprimeable number, because it can be changed into a prime (130810769) 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, 13081072 + ... + 13081081.

It is an arithmetic number, because the mean of its divisors is an integer number (39243231).

Almost surely, 2^130810765 is an apocalyptic number.

It is an amenable number.

130810765 is a deficient number, since it is larger than the sum of its proper divisors (26162159).

130810765 is an equidigital number, since it uses as much as digits as its factorization.

130810765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26162158.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 130810765 is about 11437.2533853194. The cubic root of 130810765 is about 507.6306408965.

Adding to 130810765 its reverse (567018031), we get a palindrome (697828796).

The spelling of 130810765 in words is "one hundred thirty million, eight hundred ten thousand, seven hundred sixty-five".