12886931 has 2 divisors, whose sum is σ = 12886932. Its totient is φ = 12886930.

The previous prime is 12886927. The next prime is 12886949. The reversal of 12886931 is 13968821.

It is a weak prime.

It is an emirp because it is prime and its reverse (13968821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12886931 - 2² = 12886927 is a prime.

It is a super-2 number, since 2×12886931² = 332145981197522, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12883931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443465 + 6443466.

It is an arithmetic number, because the mean of its divisors is an integer number (6443466).

Almost surely, 2^12886931 is an apocalyptic number.

12886931 is a deficient number, since it is larger than the sum of its proper divisors (1).

12886931 is an equidigital number, since it uses as much as digits as its factorization.

12886931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 38.

The square root of 12886931 is about 3589.8371829374. The cubic root of 12886931 is about 234.4497826193.

The spelling of 12886931 in words is "twelve million, eight hundred eighty-six thousand, nine hundred thirty-one".