71191371 has 8 divisors (see below), whose sum is σ = 99048960. Its totient is φ = 45397352.

The previous prime is 71191361. The next prime is 71191387. The reversal of 71191371 is 17319117.

It is a happy number.

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 71191371 - 2⁵ = 71191339 is a prime.

It is a super-2 number, since 2×71191371² = 10136422609719282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71191301) 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, 515811 + ... + 515948.

It is an arithmetic number, because the mean of its divisors is an integer number (12381120).

Almost surely, 2^71191371 is an apocalyptic number.

71191371 is a deficient number, since it is larger than the sum of its proper divisors (27857589).

71191371 is a wasteful number, since it uses less digits than its factorization.

71191371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031785.

The product of its digits is 1323, while the sum is 30.

The square root of 71191371 is about 8437.4979111109. The cubic root of 71191371 is about 414.4534751923.

The spelling of 71191371 in words is "seventy-one million, one hundred ninety-one thousand, three hundred seventy-one".