43216343 has 2 divisors, whose sum is σ = 43216344. Its totient is φ = 43216342.

The previous prime is 43216339. The next prime is 43216391. The reversal of 43216343 is 34361234.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43216343 - 2² = 43216339 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43212343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21608171 + 21608172.

It is an arithmetic number, because the mean of its divisors is an integer number (21608172).

Almost surely, 2^43216343 is an apocalyptic number.

43216343 is a deficient number, since it is larger than the sum of its proper divisors (1).

43216343 is an equidigital number, since it uses as much as digits as its factorization.

43216343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 26.

The square root of 43216343 is about 6573.9138266333. The cubic root of 43216343 is about 350.9263704346.

Adding to 43216343 its reverse (34361234), we get a palindrome (77577577).

The spelling of 43216343 in words is "forty-three million, two hundred sixteen thousand, three hundred forty-three".