71380321 has 8 divisors (see below), whose sum is σ = 77561600. Its totient is φ = 65441520.

The previous prime is 71380279. The next prime is 71380327. The reversal of 71380321 is 12308317.

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 71380321 - 2¹⁵ = 71347553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71380327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60006 + ... + 61183.

It is an arithmetic number, because the mean of its divisors is an integer number (9695200).

Almost surely, 2^71380321 is an apocalyptic number.

It is an amenable number.

71380321 is a deficient number, since it is larger than the sum of its proper divisors (6181279).

71380321 is a wasteful number, since it uses less digits than its factorization.

71380321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121239.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 71380321 is about 8448.6875312086. The cubic root of 71380321 is about 414.8198201717.

Adding to 71380321 its reverse (12308317), we get a palindrome (83688638).

The spelling of 71380321 in words is "seventy-one million, three hundred eighty thousand, three hundred twenty-one".