Scriabin's Prelude Op. 31 No. 1 is an atmospheric and harmonically adventurous work, characteristic of his later style. Its distinctive quality lies in its shimmering textures and evocative harmonies.
Achieving the ethereal soundscape through precise articulation and sensitive pedaling is the primary technical challenge.
4 Preludes (Op.31) is rated Henle level 6 of 9 — advanced repertoire, roughly ABRSM grades 7–8. In the RCM system it corresponds to about level 7.
You should be comfortable at Henle level 6 — meaning you can already play level 5–6 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of 4 Preludes (Op.31) lasts about 4 minutes.
4 Preludes (Op.31) is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.