204431014442321 has 4 divisors (see below), whose sum is σ = 204431105264292. Its totient is φ = 204430923620352.

The previous prime is 204431014442113. The next prime is 204431014442351. The reversal of 204431014442321 is 123244410134402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 89141166931600 + 115289847510721 = 9441460^2 + 10737311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204431014442321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204431014442351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41946536 + ... + 46565801.

It is an arithmetic number, because the mean of its divisors is an integer number (51107776316073).

Almost surely, 2^{204431014442321} is an apocalyptic number.

It is an amenable number.

204431014442321 is a deficient number, since it is larger than the sum of its proper divisors (90821971).

204431014442321 is an equidigital number, since it uses as much as digits as its factorization.

204431014442321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90821970.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 204431014442321 its reverse (123244410134402), we get a palindrome (327675424576723).

The spelling of 204431014442321 in words is "two hundred four trillion, four hundred thirty-one billion, fourteen million, four hundred forty-two thousand, three hundred twenty-one".