71327391 has 8 divisors (see below), whose sum is σ = 95852544. Its totient is φ = 47176920.

The previous prime is 71327369. The next prime is 71327407. The reversal of 71327391 is 19372317.

It is a happy number.

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

It is not a de Polignac number, because 71327391 - 2¹⁴ = 71311007 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71327491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93225 + ... + 93986.

It is an arithmetic number, because the mean of its divisors is an integer number (11981568).

Almost surely, 2^71327391 is an apocalyptic number.

71327391 is a deficient number, since it is larger than the sum of its proper divisors (24525153).

71327391 is a wasteful number, since it uses less digits than its factorization.

71327391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187341.

The product of its digits is 7938, while the sum is 33.

The square root of 71327391 is about 8445.5545111023. The cubic root of 71327391 is about 414.7172622955.

The spelling of 71327391 in words is "seventy-one million, three hundred twenty-seven thousand, three hundred ninety-one".