23,456,789

Number
$23 \, 456 \, 789$ is:


 * The $1 \, 475 \, 171$st prime number


 * The $11$th prime number after $2$, $3$, $5$, $7$, $23$, $67$, $89$, $4567$, $78 \, 901$, $678 \, 901$ consisting of a string of consecutive ascending digits (allowing $0$ to follow $9$)