2311244022440 has 32 divisors (see below), whose sum is σ = 5258729385000. Its totient is φ = 914109993984.

The previous prime is 2311244022433. The next prime is 2311244022491. The reversal of 2311244022440 is 442204421132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1452608278564 + 858635743876 = 1205242^2 + 926626^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324609365 + ... + 324616484.

Almost surely, 2^{2311244022440} is an apocalyptic number.

2311244022440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311244022440 is an abundant number, since it is smaller than the sum of its proper divisors (2947485362560).

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

2311244022440 is a wasteful number, since it uses less digits than its factorization.

2311244022440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649225949 (or 649225945 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 2311244022440 its reverse (442204421132), we get a palindrome (2753448443572).

The spelling of 2311244022440 in words is "two trillion, three hundred eleven billion, two hundred forty-four million, twenty-two thousand, four hundred forty".