123344189 has 2 divisors, whose sum is σ = 123344190. Its totient is φ = 123344188.

The previous prime is 123344183. The next prime is 123344203. The reversal of 123344189 is 981443321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120340900 + 3003289 = 10970^2 + 1733^2 .

It is an emirp because it is prime and its reverse (981443321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123344189 - 2⁴ = 123344173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123344183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672094 + 61672095.

It is an arithmetic number, because the mean of its divisors is an integer number (61672095).

Almost surely, 2^123344189 is an apocalyptic number.

It is an amenable number.

123344189 is a deficient number, since it is larger than the sum of its proper divisors (1).

123344189 is an equidigital number, since it uses as much as digits as its factorization.

123344189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 123344189 is about 11106.0429046533. The cubic root of 123344189 is about 497.7824313185.

The spelling of 123344189 in words is "one hundred twenty-three million, three hundred forty-four thousand, one hundred eighty-nine".