130540681 has 2 divisors, whose sum is σ = 130540682. Its totient is φ = 130540680.

The previous prime is 130540609. The next prime is 130540691. The reversal of 130540681 is 186045031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86769225 + 43771456 = 9315^2 + 6616^2 .

It is a cyclic number.

It is not a de Polignac number, because 130540681 - 2⁹ = 130540169 is a prime.

It is a super-2 number, since 2×130540681² = 34081738791887522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (130540691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65270340 + 65270341.

It is an arithmetic number, because the mean of its divisors is an integer number (65270341).

Almost surely, 2^130540681 is an apocalyptic number.

It is an amenable number.

130540681 is a deficient number, since it is larger than the sum of its proper divisors (1).

130540681 is an equidigital number, since it uses as much as digits as its factorization.

130540681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 130540681 is about 11425.4400790517. The cubic root of 130540681 is about 507.2810331231.

The spelling of 130540681 in words is "one hundred thirty million, five hundred forty thousand, six hundred eighty-one".