Find the next term in the series: 2Z5, 7Y7, 14X9, 23W11, 34V13, ?

The next term is 47U15.

Leading numbers 2, 7, 14, 23, 34 differ by 5, 7, 9, 11, so next is +13 giving 47.

The middle letters go Z, Y, X, W, V, so the next is U.

Trailing numbers 5, 7, 9, 11, 13 rise by 2, giving 15.

Combine the three parts as 47U15.

Each block moves on its own simple rule.