144237223 has 4 divisors (see below), whose sum is σ = 155332408. Its totient is φ = 133142040.

The previous prime is 144237187. The next prime is 144237229. The reversal of 144237223 is 322732441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144237223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144237191 and 144237200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144237229) 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, 5547573 + ... + 5547598.

It is an arithmetic number, because the mean of its divisors is an integer number (38833102).

Almost surely, 2^144237223 is an apocalyptic number.

144237223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

144237223 is a deficient number, since it is larger than the sum of its proper divisors (11095185).

144237223 is a wasteful number, since it uses less digits than its factorization.

144237223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095184.

The product of its digits is 8064, while the sum is 28.

The square root of 144237223 is about 12009.8802242154. The cubic root of 144237223 is about 524.4359450711.

Adding to 144237223 its reverse (322732441), we get a palindrome (466969664).

The spelling of 144237223 in words is "one hundred forty-four million, two hundred thirty-seven thousand, two hundred twenty-three".