71307713 has 4 divisors (see below), whose sum is σ = 71496240. Its totient is φ = 71119188.

The previous prime is 71307701. The next prime is 71307721. The reversal of 71307713 is 31770317.

It is a happy number.

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 not a de Polignac number, because 71307713 - 2¹⁰ = 71306689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71307113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93695 + ... + 94452.

It is an arithmetic number, because the mean of its divisors is an integer number (17874060).

Almost surely, 2^71307713 is an apocalyptic number.

It is an amenable number.

71307713 is a deficient number, since it is larger than the sum of its proper divisors (188527).

71307713 is a wasteful number, since it uses less digits than its factorization.

71307713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188526.

The product of its (nonzero) digits is 3087, while the sum is 29.

The square root of 71307713 is about 8444.3894391483. The cubic root of 71307713 is about 414.6791210020.

The spelling of 71307713 in words is "seventy-one million, three hundred seven thousand, seven hundred thirteen".