423234563 has 2 divisors, whose sum is σ = 423234564. Its totient is φ = 423234562.

The previous prime is 423234491. The next prime is 423234583. The reversal of 423234563 is 365432324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423234563 - 2⁸ = 423234307 is a prime.

It is not a weakly prime, because it can be changed into another prime (423234583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211617281 + 211617282.

It is an arithmetic number, because the mean of its divisors is an integer number (211617282).

Almost surely, 2^423234563 is an apocalyptic number.

423234563 is a deficient number, since it is larger than the sum of its proper divisors (1).

423234563 is an equidigital number, since it uses as much as digits as its factorization.

423234563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 32.

The square root of 423234563 is about 20572.6654325588. The cubic root of 423234563 is about 750.8048030435.

Adding to 423234563 its reverse (365432324), we get a palindrome (788666887).

The spelling of 423234563 in words is "four hundred twenty-three million, two hundred thirty-four thousand, five hundred sixty-three".