2311220442340 has 96 divisors (see below), whose sum is σ = 5053147545600. Its totient is φ = 886997155200.

The previous prime is 2311220442329. The next prime is 2311220442347. The reversal of 2311220442340 is 432440221132.

2311220442340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2311220442299 and 2311220442308.

It is not an unprimeable number, because it can be changed into a prime (2311220442347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89572761 + ... + 89598559.

It is an arithmetic number, because the mean of its divisors is an integer number (52636953600).

Almost surely, 2^{2311220442340} is an apocalyptic number.

2311220442340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311220442340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2526573772800).

2311220442340 is an abundant number, since it is smaller than the sum of its proper divisors (2741927103260).

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

2311220442340 is a wasteful number, since it uses less digits than its factorization.

2311220442340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27073 (or 27071 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 2311220442340 its reverse (432440221132), we get a palindrome (2743660663472).

The spelling of 2311220442340 in words is "two trillion, three hundred eleven billion, two hundred twenty million, four hundred forty-two thousand, three hundred forty".