12303249991 has 2 divisors, whose sum is σ = 12303249992. Its totient is φ = 12303249990.

The previous prime is 12303249919. The next prime is 12303250021. The reversal of 12303249991 is 19994230321.

Together with previous prime (12303249919) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12303249991 - 2⁹ = 12303249479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12303249901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6151624995 + 6151624996.

It is an arithmetic number, because the mean of its divisors is an integer number (6151624996).

Almost surely, 2^12303249991 is an apocalyptic number.

12303249991 is a deficient number, since it is larger than the sum of its proper divisors (1).

12303249991 is an equidigital number, since it uses as much as digits as its factorization.

12303249991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The spelling of 12303249991 in words is "twelve billion, three hundred three million, two hundred forty-nine thousand, nine hundred ninety-one".