216433061 has 32 divisors (see below), whose sum is σ = 251328000. Its totient is φ = 186024384.

The previous prime is 216433057. The next prime is 216433067. The reversal of 216433061 is 160334612.

It is not a de Polignac number, because 216433061 - 2² = 216433057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216433061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216433067) 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 31 ways as a sum of consecutive naturals, for example, 2739620 + ... + 2739698.

It is an arithmetic number, because the mean of its divisors is an integer number (7854000).

Almost surely, 2^216433061 is an apocalyptic number.

It is an amenable number.

216433061 is a deficient number, since it is larger than the sum of its proper divisors (34894939).

216433061 is an equidigital number, since it uses as much as digits as its factorization.

216433061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 216433061 is about 14711.6641138928. The cubic root of 216433061 is about 600.4007147273.

Adding to 216433061 its reverse (160334612), we get a palindrome (376767673).

The spelling of 216433061 in words is "two hundred sixteen million, four hundred thirty-three thousand, sixty-one".