12312312023257 has 2 divisors, whose sum is σ = 12312312023258. Its totient is φ = 12312312023256.

The previous prime is 12312312023237. The next prime is 12312312023411. The reversal of 12312312023257 is 75232021321321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10980713728656 + 1331598294601 = 3313716^2 + 1153949^2 .

It is a cyclic number.

It is not a de Polignac number, because 12312312023257 - 2³⁵ = 12277952284889 is a prime.

It is not a weakly prime, because it can be changed into another prime (12312312023227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156156011628 + 6156156011629.

It is an arithmetic number, because the mean of its divisors is an integer number (6156156011629).

Almost surely, 2^{12312312023257} is an apocalyptic number.

It is an amenable number.

12312312023257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312312023257 is an equidigital number, since it uses as much as digits as its factorization.

12312312023257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

Adding to 12312312023257 its reverse (75232021321321), we get a palindrome (87544333344578).

The spelling of 12312312023257 in words is "twelve trillion, three hundred twelve billion, three hundred twelve million, twenty-three thousand, two hundred fifty-seven".