71430319 has 2 divisors, whose sum is σ = 71430320. Its totient is φ = 71430318.

The previous prime is 71430301. The next prime is 71430343. The reversal of 71430319 is 91303417.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71430319 - 2⁵ = 71430287 is a prime.

It is a super-2 number, since 2×71430319² = 10204580944883522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71430119) 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, 35715159 + 35715160.

It is an arithmetic number, because the mean of its divisors is an integer number (35715160).

Almost surely, 2^71430319 is an apocalyptic number.

71430319 is a deficient number, since it is larger than the sum of its proper divisors (1).

71430319 is an equidigital number, since it uses as much as digits as its factorization.

71430319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 71430319 is about 8451.6459343728. The cubic root of 71430319 is about 414.9166504115.

The spelling of 71430319 in words is "seventy-one million, four hundred thirty thousand, three hundred nineteen".