title: 531 BC
text: # 531 BC
  
  The year 531 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 223 Ab urbe condita. The denomination 531 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
  
  ## Deaths
  
  * Laozi, Chinese founder of Taoism (approximate date)
  