13885631 has 2 divisors, whose sum is σ = 13885632. Its totient is φ = 13885630.

The previous prime is 13885621. The next prime is 13885639. The reversal of 13885631 is 13658831.

It is a strong prime.

It is an emirp because it is prime and its reverse (13658831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13885631 - 2²² = 9691327 is a prime.

It is a super-2 number, since 2×13885631² = 385621496536322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13885591 and 13885600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13885639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942815 + 6942816.

It is an arithmetic number, because the mean of its divisors is an integer number (6942816).

Almost surely, 2^13885631 is an apocalyptic number.

13885631 is a deficient number, since it is larger than the sum of its proper divisors (1).

13885631 is an equidigital number, since it uses as much as digits as its factorization.

13885631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 13885631 is about 3726.3428452036. The cubic root of 13885631 is about 240.3561321594.

The spelling of 13885631 in words is "thirteen million, eight hundred eighty-five thousand, six hundred thirty-one".