9513

This number is a composite.

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The smallest number without increasing digits that is divisible by the number formed by writing its digits in increasing order. 9513/1359 = prime number 7. Curiously, the first twelve terms of this sequence (9513, 81816, 93513, 94143, 95193, 816816, 888216, 933513, 934143, 935193, 941493, 951993) all share the ratio of 7. [Gudipati]