13971371 has 2 divisors, whose sum is σ = 13971372. Its totient is φ = 13971370.

The previous prime is 13971367. The next prime is 13971389. The reversal of 13971371 is 17317931.

It is a weak prime.

It is an emirp because it is prime and its reverse (17317931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13971371 - 2² = 13971367 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13971341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985685 + 6985686.

It is an arithmetic number, because the mean of its divisors is an integer number (6985686).

Almost surely, 2^13971371 is an apocalyptic number.

13971371 is a deficient number, since it is larger than the sum of its proper divisors (1).

13971371 is an equidigital number, since it uses as much as digits as its factorization.

13971371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3969, while the sum is 32.

The square root of 13971371 is about 3737.8297178978. The cubic root of 13971371 is about 240.8498286801.

The spelling of 13971371 in words is "thirteen million, nine hundred seventy-one thousand, three hundred seventy-one".