423444203 has 24 divisors (see below), whose sum is σ = 551635200. Its totient is φ = 317382624.

The previous prime is 423444173. The next prime is 423444209. The reversal of 423444203 is 302444324.

It is not a de Polignac number, because 423444203 - 2¹⁴ = 423427819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423444209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13058 + ... + 31896.

It is an arithmetic number, because the mean of its divisors is an integer number (22984800).

Almost surely, 2^423444203 is an apocalyptic number.

423444203 is a deficient number, since it is larger than the sum of its proper divisors (128190997).

423444203 is a wasteful number, since it uses less digits than its factorization.

423444203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18891 (or 18878 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 423444203 is about 20577.7599120993. The cubic root of 423444203 is about 750.9287475034.

Adding to 423444203 its reverse (302444324), we get a palindrome (725888527).

The spelling of 423444203 in words is "four hundred twenty-three million, four hundred forty-four thousand, two hundred three".