2281144321 has 4 divisors (see below), whose sum is σ = 2359804500. Its totient is φ = 2202484144.

The previous prime is 2281144319. The next prime is 2281144339. The reversal of 2281144321 is 1234411822.

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 1659340225 + 621804096 = 40735^2 + 24936^2 .

It is a cyclic number.

It is not a de Polignac number, because 2281144321 - 2¹ = 2281144319 is a prime.

It is a super-3 number, since 3×2281144321³ (a number of 29 digits) contains 333 as substring.

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 2281144321.

It is not an unprimeable number, because it can be changed into a prime (2281144121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39330046 + ... + 39330103.

It is an arithmetic number, because the mean of its divisors is an integer number (589951125).

Almost surely, 2^2281144321 is an apocalyptic number.

It is an amenable number.

2281144321 is a deficient number, since it is larger than the sum of its proper divisors (78660179).

2281144321 is an equidigital number, since it uses as much as digits as its factorization.

2281144321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78660178.

The product of its digits is 3072, while the sum is 28.

The square root of 2281144321 is about 47761.3266252101. The cubic root of 2281144321 is about 1316.3890291564.

The spelling of 2281144321 in words is "two billion, two hundred eighty-one million, one hundred forty-four thousand, three hundred twenty-one".