13151217 has 8 divisors (see below), whose sum is σ = 18566496. Its totient is φ = 8251712.

The previous prime is 13151197. The next prime is 13151227. The reversal of 13151217 is 71215131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13151217 - 2¹⁸ = 12889073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13151193 and 13151202.

It is not an unprimeable number, because it can be changed into a prime (13151227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128883 + ... + 128984.

It is an arithmetic number, because the mean of its divisors is an integer number (2320812).

Almost surely, 2^13151217 is an apocalyptic number.

13151217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13151217 is a deficient number, since it is larger than the sum of its proper divisors (5415279).

13151217 is a wasteful number, since it uses less digits than its factorization.

13151217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257887.

The product of its digits is 210, while the sum is 21.

The square root of 13151217 is about 3626.4606712330. The cubic root of 13151217 is about 236.0416533297.

Adding to 13151217 its reverse (71215131), we get a palindrome (84366348).

The spelling of 13151217 in words is "thirteen million, one hundred fifty-one thousand, two hundred seventeen".