203042240303 has 4 divisors (see below), whose sum is σ = 232048274640. Its totient is φ = 174036205968.

The previous prime is 203042240299. The next prime is 203042240309. The reversal of 203042240303 is 303042240302.

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

It is a cyclic number.

It is not a de Polignac number, because 203042240303 - 2² = 203042240299 is a prime.

It is a super-2 number, since 2×203042240303² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203042240309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14503017158 + ... + 14503017171.

It is an arithmetic number, because the mean of its divisors is an integer number (58012068660).

Almost surely, 2^203042240303 is an apocalyptic number.

203042240303 is a deficient number, since it is larger than the sum of its proper divisors (29006034337).

203042240303 is an equidigital number, since it uses as much as digits as its factorization.

203042240303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29006034336.

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 203042240303 its reverse (303042240302), we get a palindrome (506084480605).

Subtracting 203042240303 from its reverse (303042240302), we obtain a palindrome (99999999999).

The spelling of 203042240303 in words is "two hundred three billion, forty-two million, two hundred forty thousand, three hundred three".