1144276321 has 4 divisors (see below), whose sum is σ = 1144599444. Its totient is φ = 1143953200.

The previous prime is 1144276279. The next prime is 1144276327. The reversal of 1144276321 is 1236724411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 742835025 + 401441296 = 27255^2 + 20036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144276321 - 2⁷ = 1144276193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144276327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156190 + ... + 163351.

It is an arithmetic number, because the mean of its divisors is an integer number (286149861).

Almost surely, 2^1144276321 is an apocalyptic number.

It is an amenable number.

1144276321 is a deficient number, since it is larger than the sum of its proper divisors (323123).

1144276321 is an equidigital number, since it uses as much as digits as its factorization.

1144276321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323122.

The product of its digits is 8064, while the sum is 31.

The square root of 1144276321 is about 33827.1536047596. The cubic root of 1144276321 is about 1045.9485053624.

The spelling of 1144276321 in words is "one billion, one hundred forty-four million, two hundred seventy-six thousand, three hundred twenty-one".