And what's the point if it's slower and more complex?

This kata can be solved without any str conversion at all

That's a "problem" for any kata (note: don't abuse of this, there are automatic checks for this. That costs points, and may lead to banishment)

This is true! :)

Yeah,it's not tolerable for a perfectionist.

You have duplicated code, I think. In my opinion new function get_palindrome_number would be cleaner and easier to read.

Can we see the tests?

Either test for random, or block if form being imported