Larasati combines the Javanese laras (harmony, tuning) and ati (heart) — meaning "harmonious heart" or "refined consort." In the Javanese Mahabharata, Larasati is one of Arjuna's wives.
Larasati is widely used in Indonesia.
Larasati does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Larasati reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.