144221311 has 12 divisors (see below), whose sum is σ = 158041912. Its totient is φ = 130829904.

The previous prime is 144221309. The next prime is 144221317. The reversal of 144221311 is 113122441.

144221311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 144221311 - 2¹ = 144221309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144221317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43660 + ... + 46846.

Almost surely, 2^144221311 is an apocalyptic number.

144221311 is a deficient number, since it is larger than the sum of its proper divisors (13820601).

144221311 is an equidigital number, since it uses as much as digits as its factorization.

144221311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3259 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 144221311 is about 12009.2177513775. The cubic root of 144221311 is about 524.4166594076.

Adding to 144221311 its reverse (113122441), we get a palindrome (257343752).

The spelling of 144221311 in words is "one hundred forty-four million, two hundred twenty-one thousand, three hundred eleven".