Q: Can I recover erased information

if its no longer on find my iphone then no you cant,but if it is you can by using icloud to back it up

i would strongly recomend changing your password because someone else found it

Did you have a backup on iTunes?

iTunes: About iOS backups - http://support.apple.com/kb/HT4946 - including a list of what is backed up.

How to Restore iPhone From Backup - http://ipod.about.com/od/iphonetroubleshooting/ss/restore-iphone.htm