ATLANTA — InvenTrust Properties Corp. has purchased The Plaza Midtown, a 70,000-square-foot, Publix-anchored retail center in Atlanta’s Midtown district, for $31.8 million. The property is located roughly half a mile from the Georgia Institute of Technology. In addition to Publix, The Plaza Midtown is home to restaurants, fitness concepts and beauty retailers. The seller was not disclosed. With this acquisition, Downers Grove, Ill.-based InvenTrust owns and manages 85 retail properties totaling 15.2 million square feet.