204421313311 has 4 divisors (see below), whose sum is σ = 205010424072. Its totient is φ = 203832202552.

The previous prime is 204421313309. The next prime is 204421313351. The reversal of 204421313311 is 113313124402.

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 204421313311 - 2¹ = 204421313309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204421313351) 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 3 ways as a sum of consecutive naturals, for example, 294554860 + ... + 294555553.

It is an arithmetic number, because the mean of its divisors is an integer number (51252606018).

Almost surely, 2^204421313311 is an apocalyptic number.

204421313311 is a deficient number, since it is larger than the sum of its proper divisors (589110761).

204421313311 is an equidigital number, since it uses as much as digits as its factorization.

204421313311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589110760.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 204421313311 its reverse (113313124402), we get a palindrome (317734437713).

The spelling of 204421313311 in words is "two hundred four billion, four hundred twenty-one million, three hundred thirteen thousand, three hundred eleven".