12312403234409 has 2 divisors, whose sum is σ = 12312403234410. Its totient is φ = 12312403234408.

The previous prime is 12312403234387. The next prime is 12312403234423. The reversal of 12312403234409 is 90443230421321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10168732434025 + 2143670800384 = 3188845^2 + 1464128^2 .

It is a cyclic number.

It is not a de Polignac number, because 12312403234409 - 2²⁴ = 12312386457193 is a prime.

It is not a weakly prime, because it can be changed into another prime (12312453234409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156201617204 + 6156201617205.

It is an arithmetic number, because the mean of its divisors is an integer number (6156201617205).

Almost surely, 2^{12312403234409} is an apocalyptic number.

It is an amenable number.

12312403234409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312403234409 is an equidigital number, since it uses as much as digits as its factorization.

12312403234409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 12312403234409 in words is "twelve trillion, three hundred twelve billion, four hundred three million, two hundred thirty-four thousand, four hundred nine".