71330312071 has 4 divisors (see below), whose sum is σ = 71334279544. Its totient is φ = 71326344600.

The previous prime is 71330312063. The next prime is 71330312089. The reversal of 71330312071 is 17021303317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17021303317 = 2111 ⋅8063147.

It is a cyclic number.

It is not a de Polignac number, because 71330312071 - 2³ = 71330312063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71330412071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1956645 + ... + 1992766.

It is an arithmetic number, because the mean of its divisors is an integer number (17833569886).

Almost surely, 2^71330312071 is an apocalyptic number.

71330312071 is a deficient number, since it is larger than the sum of its proper divisors (3967473).

71330312071 is a wasteful number, since it uses less digits than its factorization.

71330312071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967472.

The product of its (nonzero) digits is 2646, while the sum is 28.

Adding to 71330312071 its reverse (17021303317), we get a palindrome (88351615388).

The spelling of 71330312071 in words is "seventy-one billion, three hundred thirty million, three hundred twelve thousand, seventy-one".