71351843 has 4 divisors (see below), whose sum is σ = 71434080. Its totient is φ = 71269608.

The previous prime is 71351837. The next prime is 71351857. The reversal of 71351843 is 34815317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34815317 = 467 ⋅74551.

It is a cyclic number.

It is not a de Polignac number, because 71351843 - 2²⁰ = 70303267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71351893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39803 + ... + 41556.

It is an arithmetic number, because the mean of its divisors is an integer number (17858520).

Almost surely, 2^71351843 is an apocalyptic number.

71351843 is a deficient number, since it is larger than the sum of its proper divisors (82237).

71351843 is an equidigital number, since it uses as much as digits as its factorization.

71351843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82236.

The product of its digits is 10080, while the sum is 32.

The square root of 71351843 is about 8447.0020125486. The cubic root of 71351843 is about 414.7646471211.

The spelling of 71351843 in words is "seventy-one million, three hundred fifty-one thousand, eight hundred forty-three".