130318081 has 2 divisors, whose sum is σ = 130318082. Its totient is φ = 130318080.

The previous prime is 130318063. The next prime is 130318103. The reversal of 130318081 is 180813031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99181681 + 31136400 = 9959^2 + 5580^2 .

It is a cyclic number.

It is not a de Polignac number, because 130318081 - 2⁷ = 130317953 is a prime.

It is a super-2 number, since 2×130318081² = 33965604471045122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130348081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65159040 + 65159041.

It is an arithmetic number, because the mean of its divisors is an integer number (65159041).

Almost surely, 2^130318081 is an apocalyptic number.

It is an amenable number.

130318081 is a deficient number, since it is larger than the sum of its proper divisors (1).

130318081 is an equidigital number, since it uses as much as digits as its factorization.

130318081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 130318081 is about 11415.6945036209. The cubic root of 130318081 is about 506.9925279033.

It can be divided in two parts, 13031 and 8081, that added together give a palindrome (21112).

The spelling of 130318081 in words is "one hundred thirty million, three hundred eighteen thousand, eighty-one".