213632033 has 2 divisors, whose sum is σ = 213632034. Its totient is φ = 213632032.

The previous prime is 213632011. The next prime is 213632057. The reversal of 213632033 is 330236312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111682624 + 101949409 = 10568^2 + 10097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213632033 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (213632093) 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 as a sum of consecutive naturals, namely, 106816016 + 106816017.

It is an arithmetic number, because the mean of its divisors is an integer number (106816017).

Almost surely, 2^213632033 is an apocalyptic number.

It is an amenable number.

213632033 is a deficient number, since it is larger than the sum of its proper divisors (1).

213632033 is an equidigital number, since it uses as much as digits as its factorization.

213632033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 23.

The square root of 213632033 is about 14616.1565741477. The cubic root of 213632033 is about 597.7993765916.

Adding to 213632033 its reverse (330236312), we get a palindrome (543868345).

The spelling of 213632033 in words is "two hundred thirteen million, six hundred thirty-two thousand, thirty-three".