71039113 has 4 divisors (see below), whose sum is σ = 71089920. Its totient is φ = 70988308.

The previous prime is 71039093. The next prime is 71039117. The reversal of 71039113 is 31193017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71039113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71039117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23245 + ... + 26122.

It is an arithmetic number, because the mean of its divisors is an integer number (17772480).

Almost surely, 2^71039113 is an apocalyptic number.

It is an amenable number.

71039113 is a deficient number, since it is larger than the sum of its proper divisors (50807).

71039113 is a wasteful number, since it uses less digits than its factorization.

71039113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50806.

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

The square root of 71039113 is about 8428.4703831716. The cubic root of 71039113 is about 414.1577984508.

The spelling of 71039113 in words is "seventy-one million, thirty-nine thousand, one hundred thirteen".