203243323424 has 24 divisors (see below), whose sum is σ = 400393709100. Its totient is φ = 101556032256.

The previous prime is 203243323417. The next prime is 203243323453. The reversal of 203243323424 is 424323342302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 184271015824 + 18972307600 = 429268^2 + 137740^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000579 + ... + 2099714.

Almost surely, 2^203243323424 is an apocalyptic number.

It is an amenable number.

203243323424 is a deficient number, since it is larger than the sum of its proper divisors (197150385676).

203243323424 is a wasteful number, since it uses less digits than its factorization.

203243323424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4101852 (or 4101844 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 32.

Adding to 203243323424 its reverse (424323342302), we get a palindrome (627566665726).

The spelling of 203243323424 in words is "two hundred three billion, two hundred forty-three million, three hundred twenty-three thousand, four hundred twenty-four".