13158281 has 2 divisors, whose sum is σ = 13158282. Its totient is φ = 13158280.

The previous prime is 13158269. The next prime is 13158283. The reversal of 13158281 is 18285131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 234256 = 3595^2 + 484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13158281 is a prime.

It is a super-2 number, since 2×13158281² = 346280717749922, which contains 22 as substring.

Together with 13158283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13158283) 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 as a sum of consecutive naturals, namely, 6579140 + 6579141.

It is an arithmetic number, because the mean of its divisors is an integer number (6579141).

Almost surely, 2^13158281 is an apocalyptic number.

It is an amenable number.

13158281 is a deficient number, since it is larger than the sum of its proper divisors (1).

13158281 is an equidigital number, since it uses as much as digits as its factorization.

13158281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 29.

The square root of 13158281 is about 3627.4344928613. The cubic root of 13158281 is about 236.0839079689.

The spelling of 13158281 in words is "thirteen million, one hundred fifty-eight thousand, two hundred eighty-one".