2311053440 has 128 divisors (see below), whose sum is σ = 5877256320. Its totient is φ = 865976320.

The previous prime is 2311053419. The next prime is 2311053449. The reversal of 2311053440 is 443501132.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (2311053449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3383339 + ... + 3384021.

It is an arithmetic number, because the mean of its divisors is an integer number (45916065).

Almost surely, 2^2311053440 is an apocalyptic number.

2311053440 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 2311053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2938628160).

2311053440 is an abundant number, since it is smaller than the sum of its proper divisors (3566202880).

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

2311053440 is a wasteful number, since it uses less digits than its factorization.

2311053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2311053440 is about 48073.4171866324. The cubic root of 2311053440 is about 1322.1173243001.

Adding to 2311053440 its reverse (443501132), we get a palindrome (2754554572).

The spelling of 2311053440 in words is "two billion, three hundred eleven million, fifty-three thousand, four hundred forty".