13864831 has 2 divisors, whose sum is σ = 13864832. Its totient is φ = 13864830.

The previous prime is 13864819. The next prime is 13864849. The reversal of 13864831 is 13846831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13864831 - 2⁷ = 13864703 is a prime.

It is a super-2 number, since 2×13864831² = 384467077317122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13864801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932415 + 6932416.

It is an arithmetic number, because the mean of its divisors is an integer number (6932416).

Almost surely, 2^13864831 is an apocalyptic number.

13864831 is a deficient number, since it is larger than the sum of its proper divisors (1).

13864831 is an equidigital number, since it uses as much as digits as its factorization.

13864831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 13864831 is about 3723.5508590591. The cubic root of 13864831 is about 240.2360582519.

The spelling of 13864831 in words is "thirteen million, eight hundred sixty-four thousand, eight hundred thirty-one".