123144223 has 2 divisors, whose sum is σ = 123144224. Its totient is φ = 123144222.

The previous prime is 123144221. The next prime is 123144257. The reversal of 123144223 is 322441321.

It is a weak prime.

It is an emirp because it is prime and its reverse (322441321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123144223 - 2¹ = 123144221 is a prime.

Together with 123144221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 123144194 and 123144203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123144221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61572111 + 61572112.

It is an arithmetic number, because the mean of its divisors is an integer number (61572112).

Almost surely, 2^123144223 is an apocalyptic number.

123144223 is a deficient number, since it is larger than the sum of its proper divisors (1).

123144223 is an equidigital number, since it uses as much as digits as its factorization.

123144223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 123144223 is about 11097.0366765186. The cubic root of 123144223 is about 497.5132836533.

Adding to 123144223 its reverse (322441321), we get a palindrome (445585544).

It can be divided in two parts, 1231 and 44223, that added together give a palindrome (45454).

The spelling of 123144223 in words is "one hundred twenty-three million, one hundred forty-four thousand, two hundred twenty-three".