13247071 has 2 divisors, whose sum is σ = 13247072. Its totient is φ = 13247070.

The previous prime is 13247051. The next prime is 13247077. The reversal of 13247071 is 17074231.

It is a happy number.

13247071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13247071 - 2¹³ = 13238879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13247077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6623535 + 6623536.

It is an arithmetic number, because the mean of its divisors is an integer number (6623536).

Almost surely, 2^13247071 is an apocalyptic number.

13247071 is a deficient number, since it is larger than the sum of its proper divisors (1).

13247071 is an equidigital number, since it uses as much as digits as its factorization.

13247071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 13247071 is about 3639.6525933116. The cubic root of 13247071 is about 236.6137369786.

The spelling of 13247071 in words is "thirteen million, two hundred forty-seven thousand, seventy-one".