12826631 has 2 divisors, whose sum is σ = 12826632. Its totient is φ = 12826630.

The previous prime is 12826621. The next prime is 12826643. The reversal of 12826631 is 13662821.

It is a weak prime.

It is an emirp because it is prime and its reverse (13662821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12826631 - 2¹⁰ = 12825607 is a prime.

It is a super-2 number, since 2×12826631² = 329044925620322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12826594 and 12826603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12826621) 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, 6413315 + 6413316.

It is an arithmetic number, because the mean of its divisors is an integer number (6413316).

Almost surely, 2^12826631 is an apocalyptic number.

12826631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12826631 is an equidigital number, since it uses as much as digits as its factorization.

12826631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 12826631 is about 3581.4286255627. The cubic root of 12826631 is about 234.0835348383.

The spelling of 12826631 in words is "twelve million, eight hundred twenty-six thousand, six hundred thirty-one".