Honestly the only number that 3 really “owns” is 9. 6 is its own thing, 4 takes 12, 15 is clearly 5 territory, 18 & 24 are in the 6 family, 21 is embedded in 7’s lore, 27 only reminds me of 9 and 30 is obviously a 10 multiple.
this heat is not joke people, please stay safe. if you feel like you are close to heat exhaustion please listen to your body, find the closest mexican restaurant and order their largest margarita.