No zeros occur in this puzzle.

**Across**:

**A**: this prime number equals the sum of B down and the reverse of A down.

**C**: this prime number equals the digit sum of F down.

**D**: D across + 1 is a cubic number.

**E**: a palindrome.

**G**: G across is both a cubic number and a square number.

**I**: this prime number is a palindrome and has the same digit sum as F down.

**K**: G across multiplied with the digit product of A down.

**L**: this prime number equals the sum of the digit sums of A across, F down, E across, K across, and G across.

**Down**:

**A**: a square number.

**B**: the reverse of a prime number.

**C**: the reverse of this square number is prime.

**D**: the digit product of E across.

**F**: five times A across.

**H**: a prime number.

**I**: G across plus the digit sum of G across.

**J**: a palindrome.