131

is the integer between.

Math features

 * 131 is an odd number.
 * 131 is a prime number. Therefore, it is also a deficient number.
 * 131 is a full reptend prime (period 131), and its corresponding cyclic number is 00763358778625954198473282442748091603053435114503816793893129770992366412213 74045801526717557251908396946564885496183206106870229. It is a factor of 10130 - 1.