216434333 has 2 divisors, whose sum is σ = 216434334. Its totient is φ = 216434332.

The previous prime is 216434297. The next prime is 216434353. The reversal of 216434333 is 333434612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139310809 + 77123524 = 11803^2 + 8782^2 .

It is a cyclic number.

It is not a de Polignac number, because 216434333 - 2¹⁰ = 216433309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216434296 and 216434305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216434353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108217166 + 108217167.

It is an arithmetic number, because the mean of its divisors is an integer number (108217167).

Almost surely, 2^216434333 is an apocalyptic number.

It is an amenable number.

216434333 is a deficient number, since it is larger than the sum of its proper divisors (1).

216434333 is an equidigital number, since it uses as much as digits as its factorization.

216434333 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 29.

The square root of 216434333 is about 14711.7073448326. The cubic root of 216434333 is about 600.4018909312.

Adding to 216434333 its reverse (333434612), we get a palindrome (549868945).

The spelling of 216434333 in words is "two hundred sixteen million, four hundred thirty-four thousand, three hundred thirty-three".