13091217 has 8 divisors (see below), whose sum is σ = 17635296. Its totient is φ = 8637312.

The previous prime is 13091203. The next prime is 13091219. The reversal of 13091217 is 71219031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13091217 - 2⁴ = 13091201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13091219) 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 in 7 ways as a sum of consecutive naturals, for example, 22203 + ... + 22784.

It is an arithmetic number, because the mean of its divisors is an integer number (2204412).

Almost surely, 2^13091217 is an apocalyptic number.

It is an amenable number.

13091217 is a deficient number, since it is larger than the sum of its proper divisors (4544079).

13091217 is an equidigital number, since it uses as much as digits as its factorization.

13091217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45087.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 13091217 is about 3618.1786854715. The cubic root of 13091217 is about 235.6821405463.

The spelling of 13091217 in words is "thirteen million, ninety-one thousand, two hundred seventeen".