204040104042323 has 4 divisors (see below), whose sum is σ = 204776710916400. Its totient is φ = 203303497168248.

The previous prime is 204040104042233. The next prime is 204040104042347. The reversal of 204040104042323 is 323240401040402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204040104042323 - 2¹⁰ = 204040104041299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204040104042373) 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 3 ways as a sum of consecutive naturals, for example, 368303436623 + ... + 368303437176.

It is an arithmetic number, because the mean of its divisors is an integer number (51194177729100).

Almost surely, 2^{204040104042323} is an apocalyptic number.

204040104042323 is a deficient number, since it is larger than the sum of its proper divisors (736606874077).

204040104042323 is an equidigital number, since it uses as much as digits as its factorization.

204040104042323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736606874076.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 204040104042323 its reverse (323240401040402), we get a palindrome (527280505082725).

The spelling of 204040104042323 in words is "two hundred four trillion, forty billion, one hundred four million, forty-two thousand, three hundred twenty-three".