71328319 has 2 divisors, whose sum is σ = 71328320. Its totient is φ = 71328318.

The previous prime is 71328317. The next prime is 71328329. The reversal of 71328319 is 91382317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71328319 - 2¹ = 71328317 is a prime.

It is a super-2 number, since 2×71328319² = 10175458182731522, which contains 22 as substring.

Together with 71328317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71328317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35664159 + 35664160.

It is an arithmetic number, because the mean of its divisors is an integer number (35664160).

Almost surely, 2^71328319 is an apocalyptic number.

71328319 is a deficient number, since it is larger than the sum of its proper divisors (1).

71328319 is an equidigital number, since it uses as much as digits as its factorization.

71328319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 71328319 is about 8445.6094510698. The cubic root of 71328319 is about 414.7190608376.

It can be divided in two parts, 7132 and 8319, that added together give a palindrome (15451).

The spelling of 71328319 in words is "seventy-one million, three hundred twenty-eight thousand, three hundred nineteen".