This is a ‘madani’ surah and it has 11 ayaat.
Imam Ja’far as-Sadiq (a.s.) has said that if this surah is recited frequently in the mornings and evenings, the reciter is protected from the influence of Shaitan and his temptations. His sins are also forgiven.
In another narration it is said that if a person recites this surah daily, he will be safe from every dangerous and frightening thing.
May Allah increase us in knowledge!