500130391 has 2 divisors, whose sum is σ = 500130392. Its totient is φ = 500130390.

The previous prime is 500130349. The next prime is 500130403. The reversal of 500130391 is 193031005.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 500130391 - 2⁹ = 500129879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500130691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250065195 + 250065196.

It is an arithmetic number, because the mean of its divisors is an integer number (250065196).

Almost surely, 2^500130391 is an apocalyptic number.

500130391 is a deficient number, since it is larger than the sum of its proper divisors (1).

500130391 is an equidigital number, since it uses as much as digits as its factorization.

500130391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 22.

The square root of 500130391 is about 22363.5952163332. The cubic root of 500130391 is about 793.7695142577.

Adding to 500130391 its reverse (193031005), we get a palindrome (693161396).

The spelling of 500130391 in words is "five hundred million, one hundred thirty thousand, three hundred ninety-one".