CREATE TABLE table_29085880_1 (no VARCHAR2, us_viewers__million_ VARCHAR2)

Which episode number saw 1.312 million U.S. Wviewers?
SELECT no FROM table_29085880_1 WHERE us_viewers__million_ = "1.312"
SELECT "no" FROM "table_29085880_1" WHERE "1.312" = "us_viewers__million_"