This plant is growing towards the light. It needs a quarter turn once a week.
You can also add more soil to give it more support.
Another good thing to do would be to move it right up against the window as there is more light the closer it is.
Finally, I can't see any drainage for the pot. Even a spath which likes to be kept moist can rot if the roots are ...
This is a young Rhapis Palm. It an excellent long lived palm as it tolerates the lower light levels of interior locations. To keep the plant at it's best provide bright filtered light and do not overwater. This plant is unlikely to flower or set seed until it's mature which should take many years.
Keys for identification are:
fibrous brown sheaths around ...