203313203328173 has 2 divisors, whose sum is σ = 203313203328174. Its totient is φ = 203313203328172.

The previous prime is 203313203328163. The next prime is 203313203328229. The reversal of 203313203328173 is 371823302313302.

203313203328173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112007572389769 + 91305630938404 = 10583363^2 + 9555398^2 .

It is a cyclic number.

It is not a de Polignac number, because 203313203328173 - 2¹⁴ = 203313203311789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203313203328173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203313203328113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101656601664086 + 101656601664087.

It is an arithmetic number, because the mean of its divisors is an integer number (101656601664087).

Almost surely, 2^{203313203328173} is an apocalyptic number.

It is an amenable number.

203313203328173 is a deficient number, since it is larger than the sum of its proper divisors (1).

203313203328173 is an equidigital number, since it uses as much as digits as its factorization.

203313203328173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 41.

The spelling of 203313203328173 in words is "two hundred three trillion, three hundred thirteen billion, two hundred three million, three hundred twenty-eight thousand, one hundred seventy-three".