71071307 has 4 divisors (see below), whose sum is σ = 71089800. Its totient is φ = 71052816.

The previous prime is 71071289. The next prime is 71071309. The reversal of 71071307 is 70317017.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71071307 - 2⁶ = 71071243 is a prime.

It is a super-2 number, since 2×71071307² = 10102261357376498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71071309) 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, 1073 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (17772450).

Almost surely, 2^71071307 is an apocalyptic number.

71071307 is a deficient number, since it is larger than the sum of its proper divisors (18493).

71071307 is a wasteful number, since it uses less digits than its factorization.

71071307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18492.

The product of its (nonzero) digits is 1029, while the sum is 26.

The square root of 71071307 is about 8430.3800032976. The cubic root of 71071307 is about 414.2203526407.

The spelling of 71071307 in words is "seventy-one million, seventy-one thousand, three hundred seven".