71104321 has 4 divisors (see below), whose sum is σ = 71162500. Its totient is φ = 71046144.

The previous prime is 71104309. The next prime is 71104331. The reversal of 71104321 is 12340117.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10653696 + 60450625 = 3264^2 + 7775^2 .

It is a cyclic number.

It is not a de Polignac number, because 71104321 - 2⁷ = 71104193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71104331) 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, 27216 + ... + 29713.

It is an arithmetic number, because the mean of its divisors is an integer number (17790625).

Almost surely, 2^71104321 is an apocalyptic number.

It is an amenable number.

71104321 is a deficient number, since it is larger than the sum of its proper divisors (58179).

71104321 is a wasteful number, since it uses less digits than its factorization.

71104321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58178.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 71104321 is about 8432.3378134418. The cubic root of 71104321 is about 414.2844805071.

Adding to 71104321 its reverse (12340117), we get a palindrome (83444438).

The spelling of 71104321 in words is "seventy-one million, one hundred four thousand, three hundred twenty-one".