144313321 has 2 divisors, whose sum is σ = 144313322. Its totient is φ = 144313320.

The previous prime is 144313319. The next prime is 144313343. The reversal of 144313321 is 123313441.

It is an a-pointer prime, because the next prime (144313343) can be obtained adding 144313321 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 55294096 = 9435^2 + 7436^2 .

It is an emirp because it is prime and its reverse (123313441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144313321 - 2¹ = 144313319 is a prime.

Together with 144313319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 144313292 and 144313301.

It is not a weakly prime, because it can be changed into another prime (144313121) 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 as a sum of consecutive naturals, namely, 72156660 + 72156661.

It is an arithmetic number, because the mean of its divisors is an integer number (72156661).

Almost surely, 2^144313321 is an apocalyptic number.

It is an amenable number.

144313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

144313321 is an equidigital number, since it uses as much as digits as its factorization.

144313321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 144313321 is about 12013.0479479606. The cubic root of 144313321 is about 524.5281577684.

Adding to 144313321 its reverse (123313441), we get a palindrome (267626762).

The spelling of 144313321 in words is "one hundred forty-four million, three hundred thirteen thousand, three hundred twenty-one".