13047871 has 2 divisors, whose sum is σ = 13047872. Its totient is φ = 13047870.

The previous prime is 13047863. The next prime is 13047893. The reversal of 13047871 is 17874031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13047871 - 2³ = 13047863 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13047571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6523935 + 6523936.

It is an arithmetic number, because the mean of its divisors is an integer number (6523936).

Almost surely, 2^13047871 is an apocalyptic number.

13047871 is a deficient number, since it is larger than the sum of its proper divisors (1).

13047871 is an equidigital number, since it uses as much as digits as its factorization.

13047871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 13047871 is about 3612.1836885740. The cubic root of 13047871 is about 235.4217325177.

The spelling of 13047871 in words is "thirteen million, forty-seven thousand, eight hundred seventy-one".