I have little white spots on my skin they do not itch or burn or cause any pain. could they be sun spots?

Difficult to say: With just the brief description it is hard to say for sure. There is a condition called "idiopathic guttate hypomelanosis" that is very common and completely benign which can present as you describe. However, to be sure you should have your primary care doctor have a look. You may need to be seen by a dermatologist but probably is good to start with your main doctor.