Fonia noticed that her phone number read the same when viewed upside down.
Her number began 081 and was followed by seven digits.
The two digit number formed by the fifth and sixth digits is divisible by eleven.
The two digit number formed by the fourth and fifth digits is divisible by nine.
The two digit number formed by the sixth and seventh digits is a square number.
What is Fonia's phone number?
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Can you make up some clues for your own phone number?
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