71316191 has 8 divisors (see below), whose sum is σ = 75027600. Its totient is φ = 67688320.

The previous prime is 71316149. The next prime is 71316199. The reversal of 71316191 is 19161317.

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

It is not a de Polignac number, because 71316191 - 2⁶ = 71316127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71316199) 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, 19130 + ... + 22551.

It is an arithmetic number, because the mean of its divisors is an integer number (9378450).

Almost surely, 2^71316191 is an apocalyptic number.

71316191 is a deficient number, since it is larger than the sum of its proper divisors (3711409).

71316191 is a wasteful number, since it uses less digits than its factorization.

71316191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41769.

The product of its digits is 1134, while the sum is 29.

The square root of 71316191 is about 8444.8914143404. The cubic root of 71316191 is about 414.6955545224.

The spelling of 71316191 in words is "seventy-one million, three hundred sixteen thousand, one hundred ninety-one".