231 BC

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Millennium: 1st millennium BC
231 BC in various calendars
Gregorian calendar 231 BC
Ab urbe condita 523
Ancient Egypt era XXXIII dynasty, 93
- Pharaoh Ptolemy III Euergetes, 16
Ancient Greek era 137th Olympiad, year 2
Assyrian calendar 4520
Balinese saka calendar N/A
Bengali calendar −823
Berber calendar 720
Buddhist calendar 314
Burmese calendar −868
Byzantine calendar 5278–5279
Chinese calendar 己巳(Earth Snake)
2466 or 2406
    — to —
庚午年 (Metal Horse)
2467 or 2407
Coptic calendar −514 – −513
Discordian calendar 936
Ethiopian calendar −238 – −237
Hebrew calendar 3530–3531
Hindu calendars
 - Vikram Samvat −174 – −173
 - Shaka Samvat N/A
 - Kali Yuga 2870–2871
Holocene calendar 9770
Iranian calendar 852 BP – 851 BP
Islamic calendar 878 BH – 877 BH
Javanese calendar N/A
Julian calendar N/A
Korean calendar 2103
Minguo calendar 2142 before ROC
Nanakshahi calendar −1698
Seleucid era 81/82 AG
Thai solar calendar 312–313
Tibetan calendar 阴土蛇年
(female Earth-Snake)
−104 or −485 or −1257
    — to —
(male Iron-Horse)
−103 or −484 or −1256

Year 231 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Matho and Maso (or, less frequently, year 523 Ab urbe condita). The denomination 231 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.


By place[edit]


  • Demetrius II, king of Macedon, seeks military help from Agron, King of Illyria, a loosely organized state on the Adriatic coast north of Epirus, against the advancing Aetolians. The Illyrian army routs the Aetolians and returns home as victors.

Roman Republic[edit]