12311286887 has 2 divisors, whose sum is σ = 12311286888. Its totient is φ = 12311286886.

The previous prime is 12311286847. The next prime is 12311286901. The reversal of 12311286887 is 78868211321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311286887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311286847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155643443 + 6155643444.

It is an arithmetic number, because the mean of its divisors is an integer number (6155643444).

Almost surely, 2^12311286887 is an apocalyptic number.

12311286887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311286887 is an equidigital number, since it uses as much as digits as its factorization.

12311286887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 47.

The spelling of 12311286887 in words is "twelve billion, three hundred eleven million, two hundred eighty-six thousand, eight hundred eighty-seven".