Usually associated with the devil and/or demon. Most encounters with this number are through messages (i.e. voice mails, e-mails, text messages, etc.). This goes along with thew signs of Hornets, Black Dogs, and 666 for the devil. If you've encountered this number... Please be careful.
Guy 1: Hey did you hear about Joe!?
Guy 2: I heard he died in some freak car accident, what happened!?
Guy1: Supposedly he got a voice mail, and in a deep voice someone said, "6319" and then he died...?