Kunti (कुन्ती) was the mother of the Pandavas in the Mahabharata — through a sage's boon she could summon any god to father her children. She bore Yudhishthira, Bhima, and Arjuna (and earlier, the abandoned Karna). Her wisdom and strength sustained her sons through their exile and the great war.
Featured throughout the Mahabharata.
Kunti 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.
In Pythagorean numerology the letters of Kunti reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.