12981085331 has 2 divisors, whose sum is σ = 12981085332. Its totient is φ = 12981085330.

The previous prime is 12981085319. The next prime is 12981085393. The reversal of 12981085331 is 13358018921.

12981085331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12981085331 is a prime.

It is a super-2 number, since 2×12981085331² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12981081331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6490542665 + 6490542666.

It is an arithmetic number, because the mean of its divisors is an integer number (6490542666).

Almost surely, 2^12981085331 is an apocalyptic number.

12981085331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12981085331 is an equidigital number, since it uses as much as digits as its factorization.

12981085331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 12981085331 in words is "twelve billion, nine hundred eighty-one million, eighty-five thousand, three hundred thirty-one".