Remove non-integer Characters from a column

Oracle 11..2.0.3 on Linux R6
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1) I have a field with a data type of varchar2 that has integers and non-integer characters.

2) Example: 214’ or 61+45 or 88/8.
3) How can i remove the non-integer characters from the table ?
4) Can a function be written to remove non-integer characters ?, so in the

Appreciate any pointers to solve this, thank you in advance.

Sincerely

-- 
Bala Rao

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