71013391 has 8 divisors (see below), whose sum is σ = 71874000. Its totient is φ = 70156800.

The previous prime is 71013347. The next prime is 71013401. The reversal of 71013391 is 19331017.

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 71013391 - 2⁷ = 71013263 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 (71013311) 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, 48216 + ... + 49666.

It is an arithmetic number, because the mean of its divisors is an integer number (8984250).

Almost surely, 2^71013391 is an apocalyptic number.

71013391 is a deficient number, since it is larger than the sum of its proper divisors (860609).

71013391 is a wasteful number, since it uses less digits than its factorization.

71013391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 71013391 is about 8426.9443453722. The cubic root of 71013391 is about 414.1078060244.

The spelling of 71013391 in words is "seventy-one million, thirteen thousand, three hundred ninety-one".