123322609 has 2 divisors, whose sum is σ = 123322610. Its totient is φ = 123322608.

The previous prime is 123322601. The next prime is 123322613. The reversal of 123322609 is 906223321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63600625 + 59721984 = 7975^2 + 7728^2 .

It is an emirp because it is prime and its reverse (906223321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123322609 - 2³ = 123322601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123322601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61661304 + 61661305.

It is an arithmetic number, because the mean of its divisors is an integer number (61661305).

Almost surely, 2^123322609 is an apocalyptic number.

It is an amenable number.

123322609 is a deficient number, since it is larger than the sum of its proper divisors (1).

123322609 is an equidigital number, since it uses as much as digits as its factorization.

123322609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 123322609 is about 11105.0713189966. The cubic root of 123322609 is about 497.7533993565.

It can be divided in two parts, 12332 and 2609, that added together give a palindrome (14941).

The spelling of 123322609 in words is "one hundred twenty-three million, three hundred twenty-two thousand, six hundred nine".