123312307 has 2 divisors, whose sum is σ = 123312308. Its totient is φ = 123312306.

The previous prime is 123312253. The next prime is 123312331. The reversal of 123312307 is 703213321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123312307 - 2¹⁵ = 123279539 is a prime.

It is not a weakly prime, because it can be changed into another prime (123312107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61656153 + 61656154.

It is an arithmetic number, because the mean of its divisors is an integer number (61656154).

Almost surely, 2^123312307 is an apocalyptic number.

123312307 is a deficient number, since it is larger than the sum of its proper divisors (1).

123312307 is an equidigital number, since it uses as much as digits as its factorization.

123312307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 123312307 is about 11104.6074671733. The cubic root of 123312307 is about 497.7395386964.

Adding to 123312307 its reverse (703213321), we get a palindrome (826525628).

The spelling of 123312307 in words is "one hundred twenty-three million, three hundred twelve thousand, three hundred seven".