2111311344 has 40 divisors (see below), whose sum is σ = 5455900800. Its totient is φ = 703553728.

The previous prime is 2111311333. The next prime is 2111311387. The reversal of 2111311344 is 4431131112.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2111311344.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255079 + ... + 263225.

It is an arithmetic number, because the mean of its divisors is an integer number (136397520).

Almost surely, 2^2111311344 is an apocalyptic number.

2111311344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2111311344 is an abundant number, since it is smaller than the sum of its proper divisors (3344589456).

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

2111311344 is a wasteful number, since it uses less digits than its factorization.

2111311344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13557 (or 13551 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 2111311344 is about 45949.0080850501. The cubic root of 2111311344 is about 1282.8742668539.

Adding to 2111311344 its reverse (4431131112), we get a palindrome (6542442456).

The spelling of 2111311344 in words is "two billion, one hundred eleven million, three hundred eleven thousand, three hundred forty-four".