204321123210340 has 48 divisors (see below), whose sum is σ = 451682733237120. Its totient is φ = 77422578209280.

The previous prime is 204321123210293. The next prime is 204321123210349. The reversal of 204321123210340 is 43012321123402.

204321123210340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 204321123210299 and 204321123210308.

It is not an unprimeable number, because it can be changed into a prime (204321123210349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8446816 + ... + 21908695.

It is an arithmetic number, because the mean of its divisors is an integer number (9410056942440).

Almost surely, 2^{204321123210340} is an apocalyptic number.

204321123210340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204321123210340 is an abundant number, since it is smaller than the sum of its proper divisors (247361610026780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204321123210340 is a wasteful number, since it uses less digits than its factorization.

204321123210340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30373252 (or 30373250 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 204321123210340 its reverse (43012321123402), we get a palindrome (247333444333742).

The spelling of 204321123210340 in words is "two hundred four trillion, three hundred twenty-one billion, one hundred twenty-three million, two hundred ten thousand, three hundred forty".