2144321305 has 16 divisors (see below), whose sum is σ = 3035649024. Its totient is φ = 1422959040.

The previous prime is 2144321297. The next prime is 2144321317. The reversal of 2144321305 is 5031234412.

It is not a de Polignac number, because 2144321305 - 2³ = 2144321297 is a prime.

It is a super-4 number, since 4×2144321305⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2144321305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987082 + ... + 989251.

It is an arithmetic number, because the mean of its divisors is an integer number (189728064).

Almost surely, 2^2144321305 is an apocalyptic number.

It is an amenable number.

2144321305 is a deficient number, since it is larger than the sum of its proper divisors (891327719).

2144321305 is a wasteful number, since it uses less digits than its factorization.

2144321305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976376.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2144321305 is about 46306.8170467373. The cubic root of 2144321305 is about 1289.5255561528.

Adding to 2144321305 its reverse (5031234412), we get a palindrome (7175555717).

The spelling of 2144321305 in words is "two billion, one hundred forty-four million, three hundred twenty-one thousand, three hundred five".