13256237 has 2 divisors, whose sum is σ = 13256238. Its totient is φ = 13256236.

The previous prime is 13256207. The next prime is 13256239. The reversal of 13256237 is 73265231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12187081 + 1069156 = 3491^2 + 1034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13256237 is a prime.

Together with 13256239, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13256239) 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, 6628118 + 6628119.

It is an arithmetic number, because the mean of its divisors is an integer number (6628119).

Almost surely, 2^13256237 is an apocalyptic number.

It is an amenable number.

13256237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13256237 is an equidigital number, since it uses as much as digits as its factorization.

13256237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 29.

The square root of 13256237 is about 3640.9115616834. The cubic root of 13256237 is about 236.6682975047.

The spelling of 13256237 in words is "thirteen million, two hundred fifty-six thousand, two hundred thirty-seven".