12311305291 has 2 divisors, whose sum is σ = 12311305292. Its totient is φ = 12311305290.

The previous prime is 12311305277. The next prime is 12311305309. The reversal of 12311305291 is 19250311321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12311305291 - 2⁷ = 12311305163 is a prime.

It is not a weakly prime, because it can be changed into another prime (12311305271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155652645 + 6155652646.

It is an arithmetic number, because the mean of its divisors is an integer number (6155652646).

Almost surely, 2^12311305291 is an apocalyptic number.

12311305291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311305291 is an equidigital number, since it uses as much as digits as its factorization.

12311305291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The spelling of 12311305291 in words is "twelve billion, three hundred eleven million, three hundred five thousand, two hundred ninety-one".