518204131 has 2 divisors, whose sum is σ = 518204132. Its totient is φ = 518204130.

The previous prime is 518204117. The next prime is 518204171. The reversal of 518204131 is 131402815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 518204131 - 2⁹ = 518203619 is a prime.

It is a super-2 number, since 2×518204131² = 537071042770930322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 518204096 and 518204105.

It is not a weakly prime, because it can be changed into another prime (518204111) 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, 259102065 + 259102066.

It is an arithmetic number, because the mean of its divisors is an integer number (259102066).

Almost surely, 2^518204131 is an apocalyptic number.

518204131 is a deficient number, since it is larger than the sum of its proper divisors (1).

518204131 is an equidigital number, since it uses as much as digits as its factorization.

518204131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 518204131 is about 22764.0974123728. The cubic root of 518204131 is about 803.2183536171.

Adding to 518204131 its reverse (131402815), we get a palindrome (649606946).

The spelling of 518204131 in words is "five hundred eighteen million, two hundred four thousand, one hundred thirty-one".