130204861 has 2 divisors, whose sum is σ = 130204862. Its totient is φ = 130204860.

The previous prime is 130204849. The next prime is 130204873. The reversal of 130204861 is 168402031.

It is a balanced prime because it is at equal distance from previous prime (130204849) and next prime (130204873).

It can be written as a sum of positive squares in only one way, i.e., 96157636 + 34047225 = 9806^2 + 5835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130204861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130234861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65102430 + 65102431.

It is an arithmetic number, because the mean of its divisors is an integer number (65102431).

Almost surely, 2^130204861 is an apocalyptic number.

It is an amenable number.

130204861 is a deficient number, since it is larger than the sum of its proper divisors (1).

130204861 is an equidigital number, since it uses as much as digits as its factorization.

130204861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 130204861 is about 11410.7344636531. The cubic root of 130204861 is about 506.8456607788.

Adding to 130204861 its reverse (168402031), we get a palindrome (298606892).

The spelling of 130204861 in words is "one hundred thirty million, two hundred four thousand, eight hundred sixty-one".