The Number 331: Properties and Meanings331 is a Prime Number.
331 is a Centered Pentagonal Number.
331 is a Centered Hexagonal Number.
331 is a Centered 22-gonal Number.
331 is a Centered 33-gonal Number.
Robert Franek wrote a book titled, "The Best 331 Colleges".
The Year 331 ADIn the year 331 AD the battle of Achadh Leithdheirg took place in Fearnmhagh, Ireland.
Share any properties and meanings for particular Numbers...contact me directly, thanks.