The Number 423: Properties and MeaningsPrime Factors of 423=3x3x47.
423 is a 142-gonal Number.
423 Diotima is a one of the largest Main belt asteroids.
The Year 423 ADIn the year 423 AD Theodoret became bishop of Cyrrhus, Syria.
In the year 423 AD Flavius Honorius, Western Roman Emperor, died.