213432333 has 4 divisors (see below), whose sum is σ = 284576448. Its totient is φ = 142288220.

The previous prime is 213432313. The next prime is 213432367. The reversal of 213432333 is 333234312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213432333 - 2¹⁸ = 213170189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213432313) 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 3 ways as a sum of consecutive naturals, for example, 35572053 + ... + 35572058.

It is an arithmetic number, because the mean of its divisors is an integer number (71144112).

Almost surely, 2^213432333 is an apocalyptic number.

It is an amenable number.

213432333 is a deficient number, since it is larger than the sum of its proper divisors (71144115).

213432333 is an equidigital number, since it uses as much as digits as its factorization.

213432333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71144114.

The product of its digits is 3888, while the sum is 24.

The square root of 213432333 is about 14609.3234956311. The cubic root of 213432333 is about 597.6130472422.

Adding to 213432333 its reverse (333234312), we get a palindrome (546666645).

The spelling of 213432333 in words is "two hundred thirteen million, four hundred thirty-two thousand, three hundred thirty-three".