13385237 has 2 divisors, whose sum is σ = 13385238. Its totient is φ = 13385236.

The previous prime is 13385221. The next prime is 13385243. The reversal of 13385237 is 73258331.

13385237 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 1267876 = 3481^2 + 1126^2 .

It is a cyclic number.

It is not a de Polignac number, because 13385237 - 2⁴ = 13385221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13385257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6692618 + 6692619.

It is an arithmetic number, because the mean of its divisors is an integer number (6692619).

Almost surely, 2^13385237 is an apocalyptic number.

It is an amenable number.

13385237 is a deficient number, since it is larger than the sum of its proper divisors (1).

13385237 is an equidigital number, since it uses as much as digits as its factorization.

13385237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 32.

The square root of 13385237 is about 3658.5840157088. The cubic root of 13385237 is about 237.4335149081.

The spelling of 13385237 in words is "thirteen million, three hundred eighty-five thousand, two hundred thirty-seven".