No, North Korea is not further west than the prime meridian (zero degrees latitude).
Yes, North Korea is further east than the prime meridian (zero degrees latitude). The midpoint of North Korea is further east by approximately 4,342 miles (6,988km).
Yes, North Korea is further north than the equator. The midpoint of North Korea is further north by approximately 2,787 miles (4,485km).
No, North Korea is not further south than the equator.