204023312311 has 16 divisors (see below), whose sum is σ = 264321702400. Its totient is φ = 152928982368.

The previous prime is 204023312261. The next prime is 204023312393. The reversal of 204023312311 is 113213320402.

It is a cyclic number.

It is not a de Polignac number, because 204023312311 - 2⁹ = 204023311799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204023312111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58998651 + ... + 59002108.

It is an arithmetic number, because the mean of its divisors is an integer number (16520106400).

Almost surely, 2^204023312311 is an apocalyptic number.

204023312311 is a deficient number, since it is larger than the sum of its proper divisors (60298390089).

204023312311 is a wasteful number, since it uses less digits than its factorization.

204023312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118000798.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 204023312311 its reverse (113213320402), we get a palindrome (317236632713).

The spelling of 204023312311 in words is "two hundred four billion, twenty-three million, three hundred twelve thousand, three hundred eleven".