13231289 has 2 divisors, whose sum is σ = 13231290. Its totient is φ = 13231288.

The previous prime is 13231261. The next prime is 13231297. The reversal of 13231289 is 98213231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 840889 = 3520^2 + 917^2 .

It is an emirp because it is prime and its reverse (98213231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13231289 - 2¹⁶ = 13165753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13231249) 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, 6615644 + 6615645.

It is an arithmetic number, because the mean of its divisors is an integer number (6615645).

Almost surely, 2^13231289 is an apocalyptic number.

It is an amenable number.

13231289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231289 is an equidigital number, since it uses as much as digits as its factorization.

13231289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 13231289 is about 3637.4838831258. The cubic root of 13231289 is about 236.5197357734.

The spelling of 13231289 in words is "thirteen million, two hundred thirty-one thousand, two hundred eighty-nine".