518023223 has 2 divisors, whose sum is σ = 518023224. Its totient is φ = 518023222.

The previous prime is 518023159. The next prime is 518023241. The reversal of 518023223 is 322320815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 518023223 - 2⁶ = 518023159 is a prime.

It is equal to p_27254123 and since 518023223 and 27254123 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 518023192 and 518023201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518023523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259011611 + 259011612.

It is an arithmetic number, because the mean of its divisors is an integer number (259011612).

Almost surely, 2^518023223 is an apocalyptic number.

518023223 is a deficient number, since it is larger than the sum of its proper divisors (1).

518023223 is an equidigital number, since it uses as much as digits as its factorization.

518023223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 518023223 is about 22760.1235277843. The cubic root of 518023223 is about 803.1248733778.

The spelling of 518023223 in words is "five hundred eighteen million, twenty-three thousand, two hundred twenty-three".