Ezra 2:32 Kabbalah

בְּנֵ֣י חָרִ֔ם שְׁלֹ֥שׁ מֵא֖וֹת וְעֶשְׂרִֽים׃ (ס)

The children of Harim, three hundred and twenty.

Read kabbalistic (mystical) interpretation of Ezra 2:32: and classical mystical sources.