| 2√231 (Extended Mix) | 6:48 | |
| 2√231 (House Mix) | 3:39 | |
| 2√231 (Piano-a-pella) | 3:08 | |
| 2√231 (After Hours Mix) | 5:53 |
| Title, Format | Label | Cat# | Country | Year | |
|---|---|---|---|---|---|
| 2√231 (12") | Underground (2) | UND 522 | Italy | 1991 | |
| 2√231 (Remix) (12") | Underground (2) | UND 528 | Italy | 1991 | |
| 2√231 (12") | PWL Continental | PWLT 205 | UK | 1991 | |
| 2√231 (12") | Next Plateau Records Inc. | NP50174 | US | 1991 | |
| 2√231 (12") | Konga Music | CX-135 | Spain | 1991 | |
| 2√231 (12") | PWL Continental | PWLT 205R | UK | 1991 | |
| 2√231 (12", Maxi) | ZYX Records | ZYX 6587-12 | Germany | 1991 | |
| 2√231 (12", Promo) | Next Plateau Records Inc. | NP50174W DJ | US | 1991 | |
| 2√231 (12", W/Lbl) | Underground (2) | UND 522 | Italy | 1991 | |
| 2√231 (7") | PWL Continental | PWL 205 | UK | 1991 | |
| 2√231 (7") | Zomba Records | ZB 45217 | Netherlands | 1991 | |
| 2√231 (CD, Maxi) | PWL Continental | PWCD 205 | UK | 1991 | |
| 2√231 (Cass, Single) | PWL Continental | PWMC 205 | UK | 1991 |
referencing 2√231, CD, Maxi, PWCD 205