203112200123 has 16 divisors (see below), whose sum is σ = 235428950016. Its totient is φ = 171621283680.

The previous prime is 203112200113. The next prime is 203112200149. The reversal of 203112200123 is 321002211302.

It is not a de Polignac number, because 203112200123 - 2⁴ = 203112200107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203112200113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4456790 + ... + 4502132.

It is an arithmetic number, because the mean of its divisors is an integer number (14714309376).

Almost surely, 2^203112200123 is an apocalyptic number.

203112200123 is a deficient number, since it is larger than the sum of its proper divisors (32316749893).

203112200123 is an equidigital number, since it uses as much as digits as its factorization.

203112200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54434.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 203112200123 its reverse (321002211302), we get a palindrome (524114411425).

The spelling of 203112200123 in words is "two hundred three billion, one hundred twelve million, two hundred thousand, one hundred twenty-three".