71318017 has 2 divisors, whose sum is σ = 71318018. Its totient is φ = 71318016.

The previous prime is 71317997. The next prime is 71318033. The reversal of 71318017 is 71081317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48316401 + 23001616 = 6951^2 + 4796^2 .

It is a cyclic number.

It is not a de Polignac number, because 71318017 - 2⁷ = 71317889 is a prime.

It is not a weakly prime, because it can be changed into another prime (71318057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35659008 + 35659009.

It is an arithmetic number, because the mean of its divisors is an integer number (35659009).

Almost surely, 2^71318017 is an apocalyptic number.

It is an amenable number.

71318017 is a deficient number, since it is larger than the sum of its proper divisors (1).

71318017 is an equidigital number, since it uses as much as digits as its factorization.

71318017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1176, while the sum is 28.

The square root of 71318017 is about 8444.9995263469. Note that the first 3 decimals coincide. The cubic root of 71318017 is about 414.6990938197.

The spelling of 71318017 in words is "seventy-one million, three hundred eighteen thousand, seventeen".