123311207 has 2 divisors, whose sum is σ = 123311208. Its totient is φ = 123311206.

The previous prime is 123311173. The next prime is 123311249. The reversal of 123311207 is 702113321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123311207 - 2²² = 119116903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123311267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61655603 + 61655604.

It is an arithmetic number, because the mean of its divisors is an integer number (61655604).

Almost surely, 2^123311207 is an apocalyptic number.

123311207 is a deficient number, since it is larger than the sum of its proper divisors (1).

123311207 is an equidigital number, since it uses as much as digits as its factorization.

123311207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 123311207 is about 11104.5579380721. The cubic root of 123311207 is about 497.7380586735.

Adding to 123311207 its reverse (702113321), we get a palindrome (825424528).

The spelling of 123311207 in words is "one hundred twenty-three million, three hundred eleven thousand, two hundred seven".