12323205109 has 2 divisors, whose sum is σ = 12323205110. Its totient is φ = 12323205108.

The previous prime is 12323205077. The next prime is 12323205113. The reversal of 12323205109 is 90150232321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11342889009 + 980316100 = 106503^2 + 31310^2 .

It is a cyclic number.

It is not a de Polignac number, because 12323205109 - 2⁵ = 12323205077 is a prime.

It is a super-2 number, since 2×12323205109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12323205149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6161602554 + 6161602555.

It is an arithmetic number, because the mean of its divisors is an integer number (6161602555).

Almost surely, 2^12323205109 is an apocalyptic number.

It is an amenable number.

12323205109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12323205109 is an equidigital number, since it uses as much as digits as its factorization.

12323205109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 12323205109 in words is "twelve billion, three hundred twenty-three million, two hundred five thousand, one hundred nine".