> Otherwise they're all just single digits regardless of language.

You mean single syllables? All syllables are definitely not created equal, some are harder to pronounce than others, and some don’t combine nicely when pronounced side by side.

> do you have a way of remembering them?

I do, but that’s beside the point. s/reciting/reading out loud/ if you wish.

Edit: I see the confusion now. I didn’t mean “remembering” within three seconds, that would be insane for most people.

I never made a special effort for that and I only remember 12 of those digits, so maybe I'm just using an inefficient way, but I remember them as two-digit numbers, not single digits.

I don't think I'm alone, the basic value of pi one learns in France is "3 14 16" - "trois quatorze seize" (historically it was "trois quatorze-cent-seize" so "3 1416" but it's less used today).