71344321 has 8 divisors (see below), whose sum is σ = 77014080. Its totient is φ = 65888592.

The previous prime is 71344313. The next prime is 71344331. The reversal of 71344321 is 12344317.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71344321 - 2³ = 71344313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71344331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52815 + ... + 54148.

It is an arithmetic number, because the mean of its divisors is an integer number (9626760).

Almost surely, 2^71344321 is an apocalyptic number.

It is an amenable number.

71344321 is a deficient number, since it is larger than the sum of its proper divisors (5669759).

71344321 is a wasteful number, since it uses less digits than its factorization.

71344321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107015.

The product of its digits is 2016, while the sum is 25.

The square root of 71344321 is about 8446.5567540862. The cubic root of 71344321 is about 414.7500716073.

Adding to 71344321 its reverse (12344317), we get a palindrome (83688638).

The spelling of 71344321 in words is "seventy-one million, three hundred forty-four thousand, three hundred twenty-one".