204203134321 has 8 divisors (see below), whose sum is σ = 204571350144. Its totient is φ = 203835077040.

The previous prime is 204203134301. The next prime is 204203134327. The reversal of 204203134321 is 123431302402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204203134321 - 2⁹ = 204203133809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204203134327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2709075 + ... + 2783431.

It is an arithmetic number, because the mean of its divisors is an integer number (25571418768).

Almost surely, 2^204203134321 is an apocalyptic number.

It is an amenable number.

204203134321 is a deficient number, since it is larger than the sum of its proper divisors (368215823).

204203134321 is an equidigital number, since it uses as much as digits as its factorization.

204203134321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79271.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 204203134321 its reverse (123431302402), we get a palindrome (327634436723).

The spelling of 204203134321 in words is "two hundred four billion, two hundred three million, one hundred thirty-four thousand, three hundred twenty-one".