130208261 has 2 divisors, whose sum is σ = 130208262. Its totient is φ = 130208260.

The previous prime is 130208233. The next prime is 130208303. The reversal of 130208261 is 162802031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123988225 + 6220036 = 11135^2 + 2494^2 .

It is a cyclic number.

It is not a de Polignac number, because 130208261 - 2²⁶ = 63099397 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130208161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65104130 + 65104131.

It is an arithmetic number, because the mean of its divisors is an integer number (65104131).

Almost surely, 2^130208261 is an apocalyptic number.

It is an amenable number.

130208261 is a deficient number, since it is larger than the sum of its proper divisors (1).

130208261 is an equidigital number, since it uses as much as digits as its factorization.

130208261 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 23.

The square root of 130208261 is about 11410.8834452027. The cubic root of 130208261 is about 506.8500724426.

The spelling of 130208261 in words is "one hundred thirty million, two hundred eight thousand, two hundred sixty-one".