71321412317 has 4 divisors (see below), whose sum is σ = 75075170880. Its totient is φ = 67567653756.

The previous prime is 71321412313. The next prime is 71321412319.

71321412317 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71321412317 - 2² = 71321412313 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 (71321412313) 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, 1876879253 + ... + 1876879290.

It is an arithmetic number, because the mean of its divisors is an integer number (18768792720).

Almost surely, 2^71321412317 is an apocalyptic number.

It is an amenable number.

71321412317 is a deficient number, since it is larger than the sum of its proper divisors (3753758563).

71321412317 is a wasteful number, since it uses less digits than its factorization.

71321412317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753758562.

The product of its digits is 7056, while the sum is 32.

The spelling of 71321412317 in words is "seventy-one billion, three hundred twenty-one million, four hundred twelve thousand, three hundred seventeen".