Find the number

A number HDU (H is the hundreds digit (non-zero), D is the tens digit and U is the units digit, for example 265, H is 2, D is 6 and 5 is U) have this propriety:

H+U= \(D^{2}\)

H+D+U is a multiple by 3

H+U=2D

What is the minimum interger with this property?

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