No, platypuses are not typically social animals. They are generally solitary creatures and do not form social groups. Platypuses maintain individual territories and tend to avoid interaction with other platypuses, except during the breeding season when they come together for mating purposes. Even during the breeding season, interactions between males and females are usually brief and followed by the female retreating to her nesting burrow. Once the eggs hatch, the female cares for her young alone.
Their solitary nature is part of their adaptation to their semi-aquatic lifestyle, where they spend much of their time hunting and foraging in freshwater habitats. While they are not social animals in the traditional sense, they do engage in specific behaviors and interactions during the breeding season as part of their reproductive process.