13211243 has 2 divisors, whose sum is σ = 13211244. Its totient is φ = 13211242.

The previous prime is 13211207. The next prime is 13211267. The reversal of 13211243 is 34211231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13211243 - 2⁶ = 13211179 is a prime.

It is a super-3 number, since 3×13211243³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13211273) 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 as a sum of consecutive naturals, namely, 6605621 + 6605622.

It is an arithmetic number, because the mean of its divisors is an integer number (6605622).

Almost surely, 2^13211243 is an apocalyptic number.

13211243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13211243 is an equidigital number, since it uses as much as digits as its factorization.

13211243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 17.

The square root of 13211243 is about 3634.7273625404. The cubic root of 13211243 is about 236.4002293757.

Adding to 13211243 its reverse (34211231), we get a palindrome (47422474).

The spelling of 13211243 in words is "thirteen million, two hundred eleven thousand, two hundred forty-three".