71351071 has 4 divisors (see below), whose sum is σ = 77837544. Its totient is φ = 64864600.

The previous prime is 71351051. The next prime is 71351081. The reversal of 71351071 is 17015317.

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 71351071 - 2⁷ = 71350943 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 (71351041) 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 3 ways as a sum of consecutive naturals, for example, 3243220 + ... + 3243241.

It is an arithmetic number, because the mean of its divisors is an integer number (19459386).

Almost surely, 2^71351071 is an apocalyptic number.

71351071 is a deficient number, since it is larger than the sum of its proper divisors (6486473).

71351071 is a wasteful number, since it uses less digits than its factorization.

71351071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486472.

The product of its (nonzero) digits is 735, while the sum is 25.

The square root of 71351071 is about 8446.9563157388. The cubic root of 71351071 is about 414.7631512500.

Adding to 71351071 its reverse (17015317), we get a palindrome (88366388).

The spelling of 71351071 in words is "seventy-one million, three hundred fifty-one thousand, seventy-one".