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_18893 ( "Region" text, "Total Population" real, "Catholic" real, "% Catholic" text, "% of global Catholic pop." text )

### Question ###
how many total population with catholic being smaller than 31370649.1405057 and region being north africa

### Accurate SQL ###

SELECT COUNT("Total Population") FROM table_18893 WHERE "Catholic" < '31370649.1405057' AND "Region" = 'North Africa'