13885931 has 2 divisors, whose sum is σ = 13885932. Its totient is φ = 13885930.

The previous prime is 13885919. The next prime is 13885943. The reversal of 13885931 is 13958831.

It is a balanced prime because it is at equal distance from previous prime (13885919) and next prime (13885943).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13885931 is a prime.

It is a super-2 number, since 2×13885931² = 385638159473522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13885901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942965 + 6942966.

It is an arithmetic number, because the mean of its divisors is an integer number (6942966).

Almost surely, 2^13885931 is an apocalyptic number.

13885931 is a deficient number, since it is larger than the sum of its proper divisors (1).

13885931 is an equidigital number, since it uses as much as digits as its factorization.

13885931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 13885931 is about 3726.3830989312. The cubic root of 13885931 is about 240.3578631171.

Subtracting 13885931 from its reverse (13958831), we obtain a square (72900 = 270²).

The spelling of 13885931 in words is "thirteen million, eight hundred eighty-five thousand, nine hundred thirty-one".