203423203 has 4 divisors (see below), whose sum is σ = 203452168. Its totient is φ = 203394240.

The previous prime is 203423179. The next prime is 203423221. The reversal of 203423203 is 302324302.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203423203 - 2⁹ = 203422691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203423503) 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 3 ways as a sum of consecutive naturals, for example, 3475 + ... + 20467.

It is an arithmetic number, because the mean of its divisors is an integer number (50863042).

Almost surely, 2^203423203 is an apocalyptic number.

203423203 is a deficient number, since it is larger than the sum of its proper divisors (28965).

203423203 is a wasteful number, since it uses less digits than its factorization.

203423203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28964.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 203423203 is about 14262.6506302300. The cubic root of 203423203 is about 588.1211928374.

Adding to 203423203 its reverse (302324302), we get a palindrome (505747505).

The spelling of 203423203 in words is "two hundred three million, four hundred twenty-three thousand, two hundred three".