144321213 has 16 divisors (see below), whose sum is σ = 199120896. Its totient is φ = 92883120.

The previous prime is 144321187. The next prime is 144321217. The reversal of 144321213 is 312123441.

144321213 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 144321213 - 2¹⁶ = 144255677 is a prime.

It is a super-2 number, since 2×144321213² = 41657225043582738, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144321213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144321217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41770 + ... + 45092.

It is an arithmetic number, because the mean of its divisors is an integer number (12445056).

Almost surely, 2^144321213 is an apocalyptic number.

It is an amenable number.

144321213 is a deficient number, since it is larger than the sum of its proper divisors (54799683).

144321213 is a wasteful number, since it uses less digits than its factorization.

144321213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3824.

The product of its digits is 576, while the sum is 21.

The square root of 144321213 is about 12013.3764196416. The cubic root of 144321213 is about 524.5377191421.

Adding to 144321213 its reverse (312123441), we get a palindrome (456444654).

The spelling of 144321213 in words is "one hundred forty-four million, three hundred twenty-one thousand, two hundred thirteen".