423205216223 has 2 divisors, whose sum is σ = 423205216224. Its totient is φ = 423205216222.

The previous prime is 423205216129. The next prime is 423205216237. The reversal of 423205216223 is 322612502324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423205216223 - 2²⁴ = 423188439007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423205216223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423205216243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211602608111 + 211602608112.

It is an arithmetic number, because the mean of its divisors is an integer number (211602608112).

Almost surely, 2^423205216223 is an apocalyptic number.

423205216223 is a deficient number, since it is larger than the sum of its proper divisors (1).

423205216223 is an equidigital number, since it uses as much as digits as its factorization.

423205216223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 423205216223 its reverse (322612502324), we get a palindrome (745817718547).

The spelling of 423205216223 in words is "four hundred twenty-three billion, two hundred five million, two hundred sixteen thousand, two hundred twenty-three".