204310244200123 has 16 divisors (see below), whose sum is σ = 211610545930080. Its totient is φ = 197027024621056.

The previous prime is 204310244200109. The next prime is 204310244200141. The reversal of 204310244200123 is 321002442013402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204310244200123 is a prime.

It is a super-2 number, since 2×204310244200123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204310244200091 and 204310244200100.

It is not an unprimeable number, because it can be changed into a prime (204310244230123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154521540 + ... + 155838142.

It is an arithmetic number, because the mean of its divisors is an integer number (13225659120630).

Almost surely, 2^{204310244200123} is an apocalyptic number.

204310244200123 is a deficient number, since it is larger than the sum of its proper divisors (7300301729957).

204310244200123 is a wasteful number, since it uses less digits than its factorization.

204310244200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323086.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 204310244200123 its reverse (321002442013402), we get a palindrome (525312686213525).

The spelling of 204310244200123 in words is "two hundred four trillion, three hundred ten billion, two hundred forty-four million, two hundred thousand, one hundred twenty-three".