13871471 has 2 divisors, whose sum is σ = 13871472. Its totient is φ = 13871470.

The previous prime is 13871447. The next prime is 13871491. The reversal of 13871471 is 17417831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13871471 - 2¹⁴ = 13855087 is a prime.

It is a super-3 number, since 3×13871471³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13871491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935735 + 6935736.

It is an arithmetic number, because the mean of its divisors is an integer number (6935736).

Almost surely, 2^13871471 is an apocalyptic number.

13871471 is a deficient number, since it is larger than the sum of its proper divisors (1).

13871471 is an equidigital number, since it uses as much as digits as its factorization.

13871471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 32.

The square root of 13871471 is about 3724.4423743696. The cubic root of 13871471 is about 240.2744025791.

The spelling of 13871471 in words is "thirteen million, eight hundred seventy-one thousand, four hundred seventy-one".