71216347 has 2 divisors, whose sum is σ = 71216348. Its totient is φ = 71216346.

The previous prime is 71216323. The next prime is 71216357. The reversal of 71216347 is 74361217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71216347 - 2¹⁵ = 71183579 is a prime.

It is not a weakly prime, because it can be changed into another prime (71216317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35608173 + 35608174.

It is an arithmetic number, because the mean of its divisors is an integer number (35608174).

Almost surely, 2^71216347 is an apocalyptic number.

71216347 is a deficient number, since it is larger than the sum of its proper divisors (1).

71216347 is an equidigital number, since it uses as much as digits as its factorization.

71216347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 71216347 is about 8438.9778409473. The cubic root of 71216347 is about 414.5019369631.

The spelling of 71216347 in words is "seventy-one million, two hundred sixteen thousand, three hundred forty-seven".