Rajadhiraja was a great warrior. He always led from the front standing shoulder to shoulder with his men on front lines and earned the title of Jayamkonda Chola which means the victorious Chola King.
According to B. B. Lal, former DG of ASI, Kalibangan site shows that an earthquake occured around 2600 BC, which brought to an end the Early Indus settlement at the site. It is perhaps the earliest archaeologically recorded earthquake.