130397621 has 2 divisors, whose sum is σ = 130397622. Its totient is φ = 130397620.

The previous prime is 130397609. The next prime is 130397623. The reversal of 130397621 is 126793031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 64625521 = 8110^2 + 8039^2 .

It is a cyclic number.

It is not a de Polignac number, because 130397621 - 2¹⁸ = 130135477 is a prime.

It is a Sophie Germain prime.

Together with 130397623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_7399400 and since 130397621 and 7399400 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130397623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65198810 + 65198811.

It is an arithmetic number, because the mean of its divisors is an integer number (65198811).

Almost surely, 2^130397621 is an apocalyptic number.

It is an amenable number.

130397621 is a deficient number, since it is larger than the sum of its proper divisors (1).

130397621 is an equidigital number, since it uses as much as digits as its factorization.

130397621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 130397621 is about 11419.1777725018. The cubic root of 130397621 is about 507.0956550206.

The spelling of 130397621 in words is "one hundred thirty million, three hundred ninety-seven thousand, six hundred twenty-one".