13318873 has 2 divisors, whose sum is σ = 13318874. Its totient is φ = 13318872.

The previous prime is 13318849. The next prime is 13318883. The reversal of 13318873 is 37881331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13191424 + 127449 = 3632^2 + 357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13318873 is a prime.

It is equal to p₈₆₈₆₆₀ and since 13318873 and 868660 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13318843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6659436 + 6659437.

It is an arithmetic number, because the mean of its divisors is an integer number (6659437).

Almost surely, 2^13318873 is an apocalyptic number.

It is an amenable number.

13318873 is a deficient number, since it is larger than the sum of its proper divisors (1).

13318873 is an equidigital number, since it uses as much as digits as its factorization.

13318873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 13318873 is about 3649.5031168640. The cubic root of 13318873 is about 237.0404661863.

The spelling of 13318873 in words is "thirteen million, three hundred eighteen thousand, eight hundred seventy-three".