Why does Apache Commons consider '१२३' numeric?
<p>According to Apache Commons Lang's documentation for <a href="https://commons.apache.org/proper/commons-lang/javadocs/api-release/org/apache/commons/lang3/StringUtils.html#isNumeric-java.lang.CharSequence-" rel="noreferrer"><code>StringUtils.isNumeric()</code></a>, the String '१२३' is numeric. </p>

<p>Since I believed this might be a mistake in the documentation, I ran tests to verify the statement. I found that according to Apache Commons it <em>is</em> numeric.</p>

<p>Why is this String numeric? What do those characters represent?</p>