When someone types 333 in a text messages the 333 is a symbol for multiple or 3 hearts.
It usually means love when someone writes 333 in a text message to you.
The numbers 333 also symbolize aid and encouragement.
It means that your angels are nearby, ready to help and reassure you that your plans are going well.
And It sends the message that your prayers have been answered, and seeing 333 means that whatever you requested for is on its way to you.