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_23950611_2 ( market_cap_march_15__mil_usd__ VARCHAR, april_2013_cum_rank VARCHAR )

### Question ###
How many companies had an april 2013 cumulative ranking of 3?

### Accurate SQL ###

SELECT COUNT(market_cap_march_15__mil_usd__) FROM table_23950611_2 WHERE april_2013_cum_rank = 3