71315443 has 2 divisors, whose sum is σ = 71315444. Its totient is φ = 71315442.

The previous prime is 71315429. The next prime is 71315471. The reversal of 71315443 is 34451317.

It is an a-pointer prime, because the next prime (71315471) can be obtained adding 71315443 to its sum of digits (28).

It is a weak prime.

It is an emirp because it is prime and its reverse (34451317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71315443 - 2⁵ = 71315411 is a prime.

It is not a weakly prime, because it can be changed into another prime (71315473) 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, 35657721 + 35657722.

It is an arithmetic number, because the mean of its divisors is an integer number (35657722).

Almost surely, 2^71315443 is an apocalyptic number.

71315443 is a deficient number, since it is larger than the sum of its proper divisors (1).

71315443 is an equidigital number, since it uses as much as digits as its factorization.

71315443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 71315443 is about 8444.8471270947. The cubic root of 71315443 is about 414.6941046723.

The spelling of 71315443 in words is "seventy-one million, three hundred fifteen thousand, four hundred forty-three".