130613861 has 6 divisors (see below), whose sum is σ = 151938630. Its totient is φ = 111954696.

The previous prime is 130613851. The next prime is 130613867. The reversal of 130613861 is 168316031.

It can be written as a sum of positive squares in only one way, i.e., 129390625 + 1223236 = 11375^2 + 1106^2 .

It is a de Polignac number, because none of the positive numbers 2^k-130613861 is a prime.

It is a super-3 number, since 3×130613861³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130613867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1332746 + ... + 1332843.

It is an arithmetic number, because the mean of its divisors is an integer number (25323105).

Almost surely, 2^130613861 is an apocalyptic number.

It is an amenable number.

130613861 is a deficient number, since it is larger than the sum of its proper divisors (21324769).

130613861 is an equidigital number, since it uses as much as digits as its factorization.

130613861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665603 (or 2665596 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 130613861 is about 11428.6421328170. The cubic root of 130613861 is about 507.3758078987.

Adding to 130613861 its reverse (168316031), we get a palindrome (298929892).

The spelling of 130613861 in words is "one hundred thirty million, six hundred thirteen thousand, eight hundred sixty-one".