71244307 has 2 divisors, whose sum is σ = 71244308. Its totient is φ = 71244306.

The previous prime is 71244301. The next prime is 71244377. The reversal of 71244307 is 70344217.

It is a weak prime.

It is an emirp because it is prime and its reverse (70344217) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71244307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71244301) 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, 35622153 + 35622154.

It is an arithmetic number, because the mean of its divisors is an integer number (35622154).

Almost surely, 2^71244307 is an apocalyptic number.

71244307 is a deficient number, since it is larger than the sum of its proper divisors (1).

71244307 is an equidigital number, since it uses as much as digits as its factorization.

71244307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 71244307 is about 8440.6342771145. The cubic root of 71244307 is about 414.5561752491.

The spelling of 71244307 in words is "seventy-one million, two hundred forty-four thousand, three hundred seven".