13181347 has 2 divisors, whose sum is σ = 13181348. Its totient is φ = 13181346.

The previous prime is 13181317. The next prime is 13181353. The reversal of 13181347 is 74318131.

It is a strong prime.

It is an emirp because it is prime and its reverse (74318131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13181347 is a prime.

It is not a weakly prime, because it can be changed into another prime (13181317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6590673 + 6590674.

It is an arithmetic number, because the mean of its divisors is an integer number (6590674).

Almost surely, 2^13181347 is an apocalyptic number.

13181347 is a deficient number, since it is larger than the sum of its proper divisors (1).

13181347 is an equidigital number, since it uses as much as digits as its factorization.

13181347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 13181347 is about 3630.6124827638. The cubic root of 13181347 is about 236.2217763471.

Adding to 13181347 its reverse (74318131), we get a palindrome (87499478).

The spelling of 13181347 in words is "thirteen million, one hundred eighty-one thousand, three hundred forty-seven".