My numerology for 13 says:

You are very stubborn, very hard working but unlucky in important matters inlife, very cool and helpful. You might repel people away from you, you may cause nuisance to others if you area man, as you gifted are with understanding otherpeople’s problems. If you are a girl, you excel in your studies and arts.  Your positive side is that you are always around to help family and friends. You always fall in love with those younger than you. You often live with disappointments but you will take good care of your family. You need to becareful of people who will take advantage of your kind heart (ahaks!). Andbeware of your relationships too. You are radical, patient, persistent, and ahit old-fashioned; you live with foundation & order.