203303340223 has 4 divisors (see below), whose sum is σ = 206636181928. Its totient is φ = 199970498520.

The previous prime is 203303340209. The next prime is 203303340239. The reversal of 203303340223 is 322043303302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203303340223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203303340283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666420761 + ... + 1666420882.

It is an arithmetic number, because the mean of its divisors is an integer number (51659045482).

Almost surely, 2^203303340223 is an apocalyptic number.

203303340223 is a deficient number, since it is larger than the sum of its proper divisors (3332841705).

203303340223 is an equidigital number, since it uses as much as digits as its factorization.

203303340223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332841704.

The product of its (nonzero) digits is 7776, while the sum is 25.

Adding to 203303340223 its reverse (322043303302), we get a palindrome (525346643525).

The spelling of 203303340223 in words is "two hundred three billion, three hundred three million, three hundred forty thousand, two hundred twenty-three".