The registration of the Levites totaled 23,000, every male a month old or more; they were not numbered among the other Israelites, because no inheritance was given to them among the Israelites.
Jewish Publication Society of America Version (JPS1917) - Numbers 26:62 >And they that were numbered of them were twenty and three thousand, every male from a month old and upward; for they were not numbered among the children of Israel, because there was no inheritance given them among the children of Israel.