Hint: Successor of a number ‘N’ is a number which immediately comes after ‘N’.
The number which comes immediately after a particular number is called its successor. $\therefore $ The successor of the given 2345670 will be equal to 2345670+1=2345671
Note: Here the term successor refers to the number that directly comes after the given number. To find the successor of a given whole number we add 1 to the given number. And predecessor is a term used to refer to the number which just comes before the given number. To find the predecessor of a given whole number we subtract 1 from the given number.