This number is a composite.
The smallest prime-digit tnaillirb: 3222353 = 1013 × 3181 and 3532223 = 1579 × 2237. [Gudipati]
The smallest prime-digit tnaillirb: 3222353 = 1013 × 3181 and 3532223 = 1579 × 2237. [Gudipati]