2130111306 has 48 divisors (see below), whose sum is σ = 4787827200. Its totient is φ = 683623584.

The previous prime is 2130111293. The next prime is 2130111307. The reversal of 2130111306 is 6031110312.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2130111307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186015 + ... + 197133.

It is an arithmetic number, because the mean of its divisors is an integer number (99746400).

Almost surely, 2^2130111306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2130111306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2393913600).

2130111306 is an abundant number, since it is smaller than the sum of its proper divisors (2657715894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2130111306 is a wasteful number, since it uses less digits than its factorization.

2130111306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523 (or 11520 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2130111306 is about 46153.1288863496. The cubic root of 2130111306 is about 1286.6707626771.

Adding to 2130111306 its reverse (6031110312), we get a palindrome (8161221618).

The spelling of 2130111306 in words is "two billion, one hundred thirty million, one hundred eleven thousand, three hundred six".