Luxembourg (full name, Grand Duchy of Luxembourg) covers an area of approximately 2,590 sq km. Its terrain consists of gently rolling uplands with broad, shallow valleys, some mountains in the north, and the Moselle flood plain in the southeast. Luxembourg borders Belgium, France and Germany, and is completely landlocked. The country is divided into three districts: Diekirch, Grevenmacher and Luxembourg. Luxembourg is the capital, with a time difference of 1 hour ahead of GMT. The currency is the euro, and exports include steel products, chemicals and rubber products. The population of approximately 492,000 people comprises an ethnic makeup that is 63.1% Luxembourger and 13.3% Portuguese. The primary languages are French, German and Luxembourgish, and the predominant religion is Christianity.