13289231 has 2 divisors, whose sum is σ = 13289232. Its totient is φ = 13289230.

The previous prime is 13289209. The next prime is 13289233. The reversal of 13289231 is 13298231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13289231 - 2¹⁰ = 13288207 is a prime.

It is a super-2 number, since 2×13289231² = 353207321142722, which contains 22 as substring.

Together with 13289233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13289194 and 13289203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13289233) 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, 6644615 + 6644616.

It is an arithmetic number, because the mean of its divisors is an integer number (6644616).

Almost surely, 2^13289231 is an apocalyptic number.

13289231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13289231 is an equidigital number, since it uses as much as digits as its factorization.

13289231 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 13289231 is about 3645.4397539940. The cubic root of 13289231 is about 236.8644860193.

The spelling of 13289231 in words is "thirteen million, two hundred eighty-nine thousand, two hundred thirty-one".