71133391 has 8 divisors (see below), whose sum is σ = 82101024. Its totient is φ = 60367200.

The previous prime is 71133379. The next prime is 71133427. The reversal of 71133391 is 19333117.

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 71133391 - 2⁷ = 71133263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71133311) 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, 49600 + ... + 51013.

It is an arithmetic number, because the mean of its divisors is an integer number (10262628).

Almost surely, 2^71133391 is an apocalyptic number.

71133391 is a deficient number, since it is larger than the sum of its proper divisors (10967633).

71133391 is a wasteful number, since it uses less digits than its factorization.

71133391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100721.

The product of its digits is 1701, while the sum is 28.

The square root of 71133391 is about 8434.0613585627. The cubic root of 71133391 is about 414.3409309394.

The spelling of 71133391 in words is "seventy-one million, one hundred thirty-three thousand, three hundred ninety-one".