43216133 has 2 divisors, whose sum is σ = 43216134. Its totient is φ = 43216132.

The previous prime is 43216097. The next prime is 43216163. The reversal of 43216133 is 33161234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26553409 + 16662724 = 5153^2 + 4082^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43216133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43216099 and 43216108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43216163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21608066 + 21608067.

It is an arithmetic number, because the mean of its divisors is an integer number (21608067).

Almost surely, 2^43216133 is an apocalyptic number.

It is an amenable number.

43216133 is a deficient number, since it is larger than the sum of its proper divisors (1).

43216133 is an equidigital number, since it uses as much as digits as its factorization.

43216133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 43216133 is about 6573.8978543935. The cubic root of 43216133 is about 350.9258020181.

Adding to 43216133 its reverse (33161234), we get a palindrome (76377367).

The spelling of 43216133 in words is "forty-three million, two hundred sixteen thousand, one hundred thirty-three".