13971227 has 2 divisors, whose sum is σ = 13971228. Its totient is φ = 13971226.

The previous prime is 13971197. The next prime is 13971247. The reversal of 13971227 is 72217931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13971227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13971193 and 13971202.

It is not a weakly prime, because it can be changed into another prime (13971247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985613 + 6985614.

It is an arithmetic number, because the mean of its divisors is an integer number (6985614).

Almost surely, 2^13971227 is an apocalyptic number.

13971227 is a deficient number, since it is larger than the sum of its proper divisors (1).

13971227 is an equidigital number, since it uses as much as digits as its factorization.

13971227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5292, while the sum is 32.

The square root of 13971227 is about 3737.8104553334. The cubic root of 13971227 is about 240.8490012143.

The spelling of 13971227 in words is "thirteen million, nine hundred seventy-one thousand, two hundred twenty-seven".