123612329 has 2 divisors, whose sum is σ = 123612330. Its totient is φ = 123612328.

The previous prime is 123612311. The next prime is 123612331. The reversal of 123612329 is 923216321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107226025 + 16386304 = 10355^2 + 4048^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123612329 is a prime.

Together with 123612331, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (123612829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61806164 + 61806165.

It is an arithmetic number, because the mean of its divisors is an integer number (61806165).

Almost surely, 2^123612329 is an apocalyptic number.

It is an amenable number.

123612329 is a deficient number, since it is larger than the sum of its proper divisors (1).

123612329 is an equidigital number, since it uses as much as digits as its factorization.

123612329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 123612329 is about 11118.1081574160. The cubic root of 123612329 is about 498.1428827712.

The spelling of 123612329 in words is "one hundred twenty-three million, six hundred twelve thousand, three hundred twenty-nine".