2130123311 has 4 divisors (see below), whose sum is σ = 2222737392. Its totient is φ = 2037509232.

The previous prime is 2130123301. The next prime is 2130123323. The reversal of 2130123311 is 1133210312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130123311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2130123311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130123301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46307006 + ... + 46307051.

It is an arithmetic number, because the mean of its divisors is an integer number (555684348).

Almost surely, 2^2130123311 is an apocalyptic number.

2130123311 is a deficient number, since it is larger than the sum of its proper divisors (92614081).

2130123311 is an equidigital number, since it uses as much as digits as its factorization.

2130123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92614080.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 2130123311 is about 46153.2589423542. The cubic root of 2130123311 is about 1286.6731798361.

Adding to 2130123311 its reverse (1133210312), we get a palindrome (3263333623).

The spelling of 2130123311 in words is "two billion, one hundred thirty million, one hundred twenty-three thousand, three hundred eleven".