1144304321 has 4 divisors (see below), whose sum is σ = 1148655552. Its totient is φ = 1139953092.

The previous prime is 1144304309. The next prime is 1144304401. The reversal of 1144304321 is 1234034411.

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 not a de Polignac number, because 1144304321 - 2¹⁰ = 1144303297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144300321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175221 + ... + 2175746.

It is an arithmetic number, because the mean of its divisors is an integer number (287163888).

Almost surely, 2^1144304321 is an apocalyptic number.

It is an amenable number.

1144304321 is a deficient number, since it is larger than the sum of its proper divisors (4351231).

1144304321 is an equidigital number, since it uses as much as digits as its factorization.

1144304321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351230.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1144304321 is about 33827.5674709252. The cubic root of 1144304321 is about 1045.9570366115.

Adding to 1144304321 its reverse (1234034411), we get a palindrome (2378338732).

The spelling of 1144304321 in words is "one billion, one hundred forty-four million, three hundred four thousand, three hundred twenty-one".