203133133123 has 12 divisors (see below), whose sum is σ = 210798653520. Its totient is φ = 195724048032.

The previous prime is 203133133109. The next prime is 203133133163. The reversal of 203133133123 is 321331331302.

It is a de Polignac number, because none of the positive numbers 2^k-203133133123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203133133163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579288 + ... + 861301.

It is an arithmetic number, because the mean of its divisors is an integer number (17566554460).

Almost surely, 2^203133133123 is an apocalyptic number.

203133133123 is a deficient number, since it is larger than the sum of its proper divisors (7665520397).

203133133123 is a wasteful number, since it uses less digits than its factorization.

203133133123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440766 (or 1440729 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 203133133123 its reverse (321331331302), we get a palindrome (524464464425).

The spelling of 203133133123 in words is "two hundred three billion, one hundred thirty-three million, one hundred thirty-three thousand, one hundred twenty-three".