2102311444 has 24 divisors (see below), whose sum is σ = 3708118568. Its totient is φ = 1042882560.

The previous prime is 2102311441. The next prime is 2102311447. The reversal of 2102311444 is 4441132012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2102311441) and next prime (2102311447).

It can be written as a sum of positive squares in 4 ways, for example, as 3572100 + 2098739344 = 1890^2 + 45812^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102311441) by changing a digit.

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, 263092 + ... + 270964.

Almost surely, 2^2102311444 is an apocalyptic number.

It is an amenable number.

2102311444 is a deficient number, since it is larger than the sum of its proper divisors (1605807124).

2102311444 is a wasteful number, since it uses less digits than its factorization.

2102311444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395 (or 8393 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2102311444 is about 45850.9699352151. The cubic root of 2102311444 is about 1281.0488319215.

Adding to 2102311444 its reverse (4441132012), we get a palindrome (6543443456).

The spelling of 2102311444 in words is "two billion, one hundred two million, three hundred eleven thousand, four hundred forty-four".