12775831 has 2 divisors, whose sum is σ = 12775832. Its totient is φ = 12775830.

The previous prime is 12775817. The next prime is 12775849. The reversal of 12775831 is 13857721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12775831 - 2⁹ = 12775319 is a prime.

It is a super-2 number, since 2×12775831² = 326443715481122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12775871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6387915 + 6387916.

It is an arithmetic number, because the mean of its divisors is an integer number (6387916).

Almost surely, 2^12775831 is an apocalyptic number.

12775831 is a deficient number, since it is larger than the sum of its proper divisors (1).

12775831 is an equidigital number, since it uses as much as digits as its factorization.

12775831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 34.

The square root of 12775831 is about 3574.3294476027. The cubic root of 12775831 is about 233.7740959079.

The spelling of 12775831 in words is "twelve million, seven hundred seventy-five thousand, eight hundred thirty-one".