12123317 has 2 divisors, whose sum is σ = 12123318. Its totient is φ = 12123316.

The previous prime is 12123299. The next prime is 12123341. The reversal of 12123317 is 71332121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 556516 = 3401^2 + 746^2 .

It is a cyclic number.

It is not a de Polignac number, because 12123317 - 2⁶ = 12123253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061658 + 6061659.

It is an arithmetic number, because the mean of its divisors is an integer number (6061659).

Almost surely, 2^12123317 is an apocalyptic number.

It is an amenable number.

12123317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123317 is an equidigital number, since it uses as much as digits as its factorization.

12123317 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12123317 is about 3481.8553961932. The cubic root of 12123317 is about 229.7244147280.

Adding to 12123317 its reverse (71332121), we get a palindrome (83455438).

It can be divided in two parts, 1212 and 3317, that multiplied together give a palindrome (4020204).

The spelling of 12123317 in words is "twelve million, one hundred twenty-three thousand, three hundred seventeen".