204310121420023 has 2 divisors, whose sum is σ = 204310121420024. Its totient is φ = 204310121420022.

The previous prime is 204310121420003. The next prime is 204310121420029. The reversal of 204310121420023 is 320024121013402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204310121420023 - 2⁹ = 204310121419511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204310121420023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204310121420029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102155060710011 + 102155060710012.

It is an arithmetic number, because the mean of its divisors is an integer number (102155060710012).

Almost surely, 2^{204310121420023} is an apocalyptic number.

204310121420023 is a deficient number, since it is larger than the sum of its proper divisors (1).

204310121420023 is an equidigital number, since it uses as much as digits as its factorization.

204310121420023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 204310121420023 its reverse (320024121013402), we get a palindrome (524334242433425).

The spelling of 204310121420023 in words is "two hundred four trillion, three hundred ten billion, one hundred twenty-one million, four hundred twenty thousand, twenty-three".