13831687 has 2 divisors, whose sum is σ = 13831688. Its totient is φ = 13831686.

The previous prime is 13831679. The next prime is 13831703. The reversal of 13831687 is 78613831.

13831687 is digitally balanced in base 3, 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 not a de Polignac number, because 13831687 - 2³ = 13831679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13831607) 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, 6915843 + 6915844.

It is an arithmetic number, because the mean of its divisors is an integer number (6915844).

Almost surely, 2^13831687 is an apocalyptic number.

13831687 is a deficient number, since it is larger than the sum of its proper divisors (1).

13831687 is an equidigital number, since it uses as much as digits as its factorization.

13831687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 13831687 is about 3719.0976056027. The cubic root of 13831687 is about 240.0444767108.

The spelling of 13831687 in words is "thirteen million, eight hundred thirty-one thousand, six hundred eighty-seven".