204321143403 has 12 divisors (see below), whose sum is σ = 317832889920. Its totient is φ = 125736088176.

The previous prime is 204321143347. The next prime is 204321143407. The reversal of 204321143403 is 304341123402.

204321143403 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 211 + 43 + 403 = 666.

It is not a de Polignac number, because 204321143403 - 2¹⁰ = 204321142379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204321143407) 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 11 ways as a sum of consecutive naturals, for example, 873167163 + ... + 873167396.

It is an arithmetic number, because the mean of its divisors is an integer number (26486074160).

Almost surely, 2^204321143403 is an apocalyptic number.

204321143403 is a deficient number, since it is larger than the sum of its proper divisors (113511746517).

204321143403 is a wasteful number, since it uses less digits than its factorization.

204321143403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746334578 (or 1746334575 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 204321143403 its reverse (304341123402), we get a palindrome (508662266805).

The spelling of 204321143403 in words is "two hundred four billion, three hundred twenty-one million, one hundred forty-three thousand, four hundred three".