204530344123 has 16 divisors (see below), whose sum is σ = 241848953280. Its totient is φ = 169238716416.

The previous prime is 204530344099. The next prime is 204530344163. The reversal of 204530344123 is 321443035402.

It is a happy number.

It is not a de Polignac number, because 204530344123 - 2³⁷ = 67091390651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204530344163) 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, 1206915 + ... + 1365907.

It is an arithmetic number, because the mean of its divisors is an integer number (15115559580).

Almost surely, 2^204530344123 is an apocalyptic number.

204530344123 is a deficient number, since it is larger than the sum of its proper divisors (37318609157).

204530344123 is a wasteful number, since it uses less digits than its factorization.

204530344123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165366.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 204530344123 its reverse (321443035402), we get a palindrome (525973379525).

The spelling of 204530344123 in words is "two hundred four billion, five hundred thirty million, three hundred forty-four thousand, one hundred twenty-three".