2311123231230 has 128 divisors (see below), whose sum is σ = 6115102511616. Its totient is φ = 554339136000.

The previous prime is 2311123231211. The next prime is 2311123231237. The reversal of 2311123231230 is 321323211132.

It is a self number, because there is not a number n which added to its sum of digits gives 2311123231230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311123231237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 49405012 + ... + 49451768.

It is an arithmetic number, because the mean of its divisors is an integer number (47774238372).

Almost surely, 2^{2311123231230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311123231230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3057551255808).

2311123231230 is an abundant number, since it is smaller than the sum of its proper divisors (3803979280386).

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

2311123231230 is a wasteful number, since it uses less digits than its factorization.

2311123231230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48362.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2311123231230 its reverse (321323211132), we get a palindrome (2632446442362).

The spelling of 2311123231230 in words is "two trillion, three hundred eleven billion, one hundred twenty-three million, two hundred thirty-one thousand, two hundred thirty".