144224213 has 4 divisors (see below), whose sum is σ = 164827680. Its totient is φ = 123620748.

The previous prime is 144224207. The next prime is 144224299. The reversal of 144224213 is 312422441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312422441 = 7577 ⋅41233.

It is a cyclic number.

It is not a de Polignac number, because 144224213 - 2⁶ = 144224149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144224813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10301723 + ... + 10301736.

It is an arithmetic number, because the mean of its divisors is an integer number (41206920).

Almost surely, 2^144224213 is an apocalyptic number.

It is an amenable number.

144224213 is a deficient number, since it is larger than the sum of its proper divisors (20603467).

144224213 is an equidigital number, since it uses as much as digits as its factorization.

144224213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20603466.

The product of its digits is 1536, while the sum is 23.

The square root of 144224213 is about 12009.3385746260. The cubic root of 144224213 is about 524.4201767956.

Adding to 144224213 its reverse (312422441), we get a palindrome (456646654).

The spelling of 144224213 in words is "one hundred forty-four million, two hundred twenty-four thousand, two hundred thirteen".