212331433 has 2 divisors, whose sum is σ = 212331434. Its totient is φ = 212331432.

The previous prime is 212331397. The next prime is 212331443. The reversal of 212331433 is 334133212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204976489 + 7354944 = 14317^2 + 2712^2 .

It is a cyclic number.

It is not a de Polignac number, because 212331433 - 2¹⁷ = 212200361 is a prime.

It is not a weakly prime, because it can be changed into another prime (212331443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106165716 + 106165717.

It is an arithmetic number, because the mean of its divisors is an integer number (106165717).

Almost surely, 2^212331433 is an apocalyptic number.

It is an amenable number.

212331433 is a deficient number, since it is larger than the sum of its proper divisors (1).

212331433 is an equidigital number, since it uses as much as digits as its factorization.

212331433 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 212331433 is about 14571.5967896453. The cubic root of 212331433 is about 596.5837645119.

Adding to 212331433 its reverse (334133212), we get a palindrome (546464645).

The spelling of 212331433 in words is "two hundred twelve million, three hundred thirty-one thousand, four hundred thirty-three".