13317881 has 2 divisors, whose sum is σ = 13317882. Its totient is φ = 13317880.

The previous prime is 13317869. The next prime is 13317923. The reversal of 13317881 is 18871331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9554281 + 3763600 = 3091^2 + 1940^2 .

It is an emirp because it is prime and its reverse (18871331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13317881 - 2¹⁸ = 13055737 is a prime.

It is a super-2 number, since 2×13317881² = 354731908660322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13314881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6658940 + 6658941.

It is an arithmetic number, because the mean of its divisors is an integer number (6658941).

Almost surely, 2^13317881 is an apocalyptic number.

It is an amenable number.

13317881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13317881 is an equidigital number, since it uses as much as digits as its factorization.

13317881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 32.

The square root of 13317881 is about 3649.3672054207. The cubic root of 13317881 is about 237.0345810543.

The spelling of 13317881 in words is "thirteen million, three hundred seventeen thousand, eight hundred eighty-one".