AUM symbolizes the infinite Brahman (ultimate reality) and the entire universe.
A stands for Creation
U stands for Preservation
M stands for Destruction or dissolution
This is representative of the Trinity of God (Brahma, Vishnu and Shiva)
Each of the Gods in the Trinity has a consort and each God is inseparable from his female part ( cosmic power or cosmic force )
Brahma has Saraswati as his consort, The goddess of knowledge..
Brahma needs Saraswati for Creation of this universe.
Vishnu has Lakshmi as his consort, the goddess of wealth, love, beauty and delight.. Vishnu needs Lakshmi for Preservation and maintenance of universe.
Shiva has Shakthi as his consort, the Goddess of power, destruction and transformation.. Shiva needs Shakthi for destruction or dissolution of the universe.
