123320969 has 2 divisors, whose sum is σ = 123320970. Its totient is φ = 123320968.

The previous prime is 123320933. The next prime is 123320971. The reversal of 123320969 is 969023321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84732025 + 38588944 = 9205^2 + 6212^2 .

It is a cyclic number.

It is not a de Polignac number, because 123320969 - 2⁸ = 123320713 is a prime.

It is a super-2 number, since 2×123320969² = 30416122790197922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 123320971, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (123320999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660484 + 61660485.

It is an arithmetic number, because the mean of its divisors is an integer number (61660485).

Almost surely, 2^123320969 is an apocalyptic number.

It is an amenable number.

123320969 is a deficient number, since it is larger than the sum of its proper divisors (1).

123320969 is an equidigital number, since it uses as much as digits as its factorization.

123320969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 123320969 is about 11104.9974786130. The cubic root of 123320969 is about 497.7511928966.

The spelling of 123320969 in words is "one hundred twenty-three million, three hundred twenty thousand, nine hundred sixty-nine".