213132433 has 2 divisors, whose sum is σ = 213132434. Its totient is φ = 213132432.

The previous prime is 213132389. The next prime is 213132457. The reversal of 213132433 is 334231312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108847489 + 104284944 = 10433^2 + 10212^2 .

It is a cyclic number.

It is not a de Polignac number, because 213132433 - 2²⁵ = 179578001 is a prime.

It is not a weakly prime, because it can be changed into another prime (213132233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106566216 + 106566217.

It is an arithmetic number, because the mean of its divisors is an integer number (106566217).

Almost surely, 2^213132433 is an apocalyptic number.

It is an amenable number.

213132433 is a deficient number, since it is larger than the sum of its proper divisors (1).

213132433 is an equidigital number, since it uses as much as digits as its factorization.

213132433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 22.

The square root of 213132433 is about 14599.0558941323. The cubic root of 213132433 is about 597.3330081929. Note that the first 3 decimals are identical.

Adding to 213132433 its reverse (334231312), we get a palindrome (547363745).

The spelling of 213132433 in words is "two hundred thirteen million, one hundred thirty-two thousand, four hundred thirty-three".