Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_11430 ( "Average population (x 1000)" real, "Live births" real, "Deaths" text, "Natural change" real, "Crude birth rate (per 1000)" real, "Crude death rate (per 1000)" real, "Natural change (per 1000)" real )

### Question ###
what is the crude birth rate (per 1000) when the natural change (per 1000) is more than 31.6 and the average population (x1000) is less than 1,802?

### Accurate SQL ###

SELECT SUM("Crude birth rate (per 1000)") FROM table_11430 WHERE "Natural change (per 1000)" > '31.6' AND "Average population (x 1000)" < '1,802'