423226523 has 2 divisors, whose sum is σ = 423226524. Its totient is φ = 423226522.

The previous prime is 423226499. The next prime is 423226537. The reversal of 423226523 is 325622324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423226523 is a prime.

It is not a weakly prime, because it can be changed into another prime (423226123) 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, 211613261 + 211613262.

It is an arithmetic number, because the mean of its divisors is an integer number (211613262).

Almost surely, 2^423226523 is an apocalyptic number.

423226523 is a deficient number, since it is larger than the sum of its proper divisors (1).

423226523 is an equidigital number, since it uses as much as digits as its factorization.

423226523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 29.

The square root of 423226523 is about 20572.4700267129. The cubic root of 423226523 is about 750.8000487777.

Adding to 423226523 its reverse (325622324), we get a palindrome (748848847).

The spelling of 423226523 in words is "four hundred twenty-three million, two hundred twenty-six thousand, five hundred twenty-three".