423144023 has 2 divisors, whose sum is σ = 423144024. Its totient is φ = 423144022.

The previous prime is 423144011. The next prime is 423144031. The reversal of 423144023 is 320441324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423144023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423144023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423144053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211572011 + 211572012.

It is an arithmetic number, because the mean of its divisors is an integer number (211572012).

Almost surely, 2^423144023 is an apocalyptic number.

423144023 is a deficient number, since it is larger than the sum of its proper divisors (1).

423144023 is an equidigital number, since it uses as much as digits as its factorization.

423144023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 423144023 is about 20570.4648221668. The cubic root of 423144023 is about 750.7512608545.

Adding to 423144023 its reverse (320441324), we get a palindrome (743585347).

The spelling of 423144023 in words is "four hundred twenty-three million, one hundred forty-four thousand, twenty-three".