12343205123 has 2 divisors, whose sum is σ = 12343205124. Its totient is φ = 12343205122.

The previous prime is 12343205107. The next prime is 12343205167. The reversal of 12343205123 is 32150234321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12343205123 - 2⁴ = 12343205107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12343205092 and 12343205101.

It is not a weakly prime, because it can be changed into another prime (12343205023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6171602561 + 6171602562.

It is an arithmetic number, because the mean of its divisors is an integer number (6171602562).

Almost surely, 2^12343205123 is an apocalyptic number.

12343205123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12343205123 is an equidigital number, since it uses as much as digits as its factorization.

12343205123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 12343205123 its reverse (32150234321), we get a palindrome (44493439444).

The spelling of 12343205123 in words is "twelve billion, three hundred forty-three million, two hundred five thousand, one hundred twenty-three".