71320339 has 2 divisors, whose sum is σ = 71320340. Its totient is φ = 71320338.

The previous prime is 71320313. The next prime is 71320363. The reversal of 71320339 is 93302317.

It is a strong prime.

It is an emirp because it is prime and its reverse (93302317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71320339 - 2⁵ = 71320307 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71320399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35660169 + 35660170.

It is an arithmetic number, because the mean of its divisors is an integer number (35660170).

Almost surely, 2^71320339 is an apocalyptic number.

71320339 is a deficient number, since it is larger than the sum of its proper divisors (1).

71320339 is an equidigital number, since it uses as much as digits as its factorization.

71320339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 71320339 is about 8445.1370030332. The cubic root of 71320339 is about 414.7035944162.

The spelling of 71320339 in words is "seventy-one million, three hundred twenty thousand, three hundred thirty-nine".