204340133123 has 32 divisors (see below), whose sum is σ = 243027164160. Its totient is φ = 168100732800.

The previous prime is 204340133113. The next prime is 204340133143. The reversal of 204340133123 is 321331043402.

It is not a de Polignac number, because 204340133123 - 2¹⁶ = 204340067587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204340133092 and 204340133101.

It is not an unprimeable number, because it can be changed into a prime (204340133113) 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 31 ways as a sum of consecutive naturals, for example, 80100698 + ... + 80103248.

It is an arithmetic number, because the mean of its divisors is an integer number (7594598880).

Almost surely, 2^204340133123 is an apocalyptic number.

204340133123 is a deficient number, since it is larger than the sum of its proper divisors (38687031037).

204340133123 is a wasteful number, since it uses less digits than its factorization.

204340133123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 204340133123 its reverse (321331043402), we get a palindrome (525671176525).

The spelling of 204340133123 in words is "two hundred four billion, three hundred forty million, one hundred thirty-three thousand, one hundred twenty-three".