71223443 has 8 divisors (see below), whose sum is σ = 72576960. Its totient is φ = 69874920.

The previous prime is 71223413. The next prime is 71223487. The reversal of 71223443 is 34432217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71223443 - 2¹⁸ = 70961299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71223403) 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 7 ways as a sum of consecutive naturals, for example, 39896 + ... + 41642.

It is an arithmetic number, because the mean of its divisors is an integer number (9072120).

Almost surely, 2^71223443 is an apocalyptic number.

71223443 is a deficient number, since it is larger than the sum of its proper divisors (1353517).

71223443 is a wasteful number, since it uses less digits than its factorization.

71223443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497.

The product of its digits is 4032, while the sum is 26.

The square root of 71223443 is about 8439.3982605397. The cubic root of 71223443 is about 414.5157035030.

The spelling of 71223443 in words is "seventy-one million, two hundred twenty-three thousand, four hundred forty-three".