As far as I'm aware, if it's got upwards of 350 legs, those are called millipedes, not centipedes.
Also, I've never in my life seen either a centipede or a millipede with legs anywhere near that long, so my mind is still stuck on WTF is that damn thing?
Any which way you go, I'd say kill it with fire! Even though it's already dead, I wouldn't wanna take any chances if it happens to have eggs in it or possibly a parasite or anything...