13320971 has 2 divisors, whose sum is σ = 13320972. Its totient is φ = 13320970.

The previous prime is 13320959. The next prime is 13320977. The reversal of 13320971 is 17902331.

It is a strong prime.

It is an emirp because it is prime and its reverse (17902331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13320971 - 2¹⁰ = 13319947 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13320971.

It is not a weakly prime, because it can be changed into another prime (13320977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6660485 + 6660486.

It is an arithmetic number, because the mean of its divisors is an integer number (6660486).

Almost surely, 2^13320971 is an apocalyptic number.

13320971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13320971 is an equidigital number, since it uses as much as digits as its factorization.

13320971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13320971 is about 3649.7905419352. The cubic root of 13320971 is about 237.0529118036.

The spelling of 13320971 in words is "thirteen million, three hundred twenty thousand, nine hundred seventy-one".