What happened to Korach, and where was he during the deaths of the rebelling factions at the end of his saga? Was he swallowed up with his followers, or was he burnt with the givers of incense - or neither?

Who was Korach? His tragic flaw was that he connected two very groups - one that could have been legitimate, with another (led by Datan and Aviram) whose purpose was evil. A sad situation comes about when people associate  with evil organizations - it makes others wonder if they are essentially similar.