CREATE TABLE table_18893 ("Region" TEXT, "Total Population" FLOAT, "Catholic" FLOAT, "% Catholic" TEXT, "% of global Catholic pop." TEXT)

how many total population with catholic being smaller than 31370649.1405057 and region being north africa
SELECT COUNT("Total Population") FROM table_18893 WHERE "Catholic" < '31370649.1405057' AND "Region" = 'North Africa'
SELECT COUNT("Total Population") FROM "table_18893" WHERE "Catholic" < '31370649.1405057' AND "Region" = 'North Africa'