We are given the division algorithm formula:
\[
a = bq + r.
\]
Substitute the given values \( b = 43 \), \( q = 31 \), and \( r = 32 \) into the formula:
\[
a = 43 \times 31 + 32.
\]
First, calculate \( 43 \times 31 \):
\[
43 \times 31 = 1333.
\]
Now, add \( r = 32 \):
\[
a = 1333 + 32 = 1360.
\]
Thus, the value of \( a \) is \( \boxed{1360} \).