203123044133 has 2 divisors, whose sum is σ = 203123044134. Its totient is φ = 203123044132.

The previous prime is 203123044099. The next prime is 203123044177. The reversal of 203123044133 is 331440321302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188535718849 + 14587325284 = 434207^2 + 120778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203123044133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203123044183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101561522066 + 101561522067.

It is an arithmetic number, because the mean of its divisors is an integer number (101561522067).

Almost surely, 2^203123044133 is an apocalyptic number.

It is an amenable number.

203123044133 is a deficient number, since it is larger than the sum of its proper divisors (1).

203123044133 is an equidigital number, since it uses as much as digits as its factorization.

203123044133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 203123044133 its reverse (331440321302), we get a palindrome (534563365435).

The spelling of 203123044133 in words is "two hundred three billion, one hundred twenty-three million, forty-four thousand, one hundred thirty-three".