71730271 has 2 divisors, whose sum is σ = 71730272. Its totient is φ = 71730270.

The previous prime is 71730233. The next prime is 71730283. The reversal of 71730271 is 17203717.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71730271 - 2⁷ = 71730143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71730221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35865135 + 35865136.

It is an arithmetic number, because the mean of its divisors is an integer number (35865136).

Almost surely, 2^71730271 is an apocalyptic number.

71730271 is a deficient number, since it is larger than the sum of its proper divisors (1).

71730271 is an equidigital number, since it uses as much as digits as its factorization.

71730271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2058, while the sum is 28.

The square root of 71730271 is about 8469.3725269349. The cubic root of 71730271 is about 415.4966155261.

Adding to 71730271 its reverse (17203717), we get a palindrome (88933988).

The spelling of 71730271 in words is "seventy-one million, seven hundred thirty thousand, two hundred seventy-one".