2144321 has 4 divisors (see below), whose sum is σ = 2257200. Its totient is φ = 2031444.

The previous prime is 2144309. The next prime is 2144323. The reversal of 2144321 is 1234412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2144321 is a prime.

It is a super-2 number, since 2×2144321² = 9196225102082, which contains 22 as substring.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2144321.

It is not an unprimeable number, because it can be changed into a prime (2144323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56411 + ... + 56448.

It is an arithmetic number, because the mean of its divisors is an integer number (564300).

2^2144321 is an apocalyptic number.

It is an amenable number.

2144321 is a deficient number, since it is larger than the sum of its proper divisors (112879).

2144321 is a wasteful number, since it uses less digits than its factorization.

2144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112878.

The product of its digits is 192, while the sum is 17.

The square root of 2144321 is about 1464.3500264623. The cubic root of 2144321 is about 128.9525495014.

Adding to 2144321 its reverse (1234412), we get a palindrome (3378733).

Subtracting from 2144321 its reverse (1234412), we obtain a palindrome (909909).

The spelling of 2144321 in words is "two million, one hundred forty-four thousand, three hundred twenty-one".