Qarun
Yes. The figure Qārūn (Qarun) is mentioned explicitly in the Quran; his story and admonition appear in Surah al-Qasas (28:76-82).
Qarun functions as a proper name (Arabic form of Korah). Its literal etymology is uncertain; in Islamic tradition the name chiefly signifies the Quranic figure known for great wealth and arrogance.
No. Because the Quranic narrative treats Qarun as a cautionary example, the name is rare in contemporary Muslim naming practices.
Yes. Qarun is frequently referenced in religious studies, tafsir, sermons, literature, and comparative Biblical-Quranic scholarship as an illustrative figure.
Yes. Variants and related forms encountered in different languages and historical texts include Korah (Hebrew), Qaroun, and Karun (regional pronunciations).