Phalla is from the Khmer Phala — derived from the Sanskrit phala (fruit, result, reward). Phalla Vy — modern Cambodian-American figure. Phalla Sokunthea — modern Cambodian figure. Phalla Chea — Cambodian artist. Princess Phalla — modern Khmer royal heritage naming.
Phalla 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 Phalla reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.