213303233 has 16 divisors (see below), whose sum is σ = 265337856. Its totient is φ = 168464640.

The previous prime is 213303229. The next prime is 213303269. The reversal of 213303233 is 332303312.

It is a cyclic number.

It is not a de Polignac number, because 213303233 - 2² = 213303229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213303283) 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 in 15 ways as a sum of consecutive naturals, for example, 41441 + ... + 46302.

It is an arithmetic number, because the mean of its divisors is an integer number (16583616).

Almost surely, 2^213303233 is an apocalyptic number.

It is an amenable number.

213303233 is a deficient number, since it is larger than the sum of its proper divisors (52034623).

213303233 is a wasteful number, since it uses less digits than its factorization.

213303233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87784.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 213303233 is about 14604.9044159830. The cubic root of 213303233 is about 597.4925290990.

Adding to 213303233 its reverse (332303312), we get a palindrome (545606545).

The spelling of 213303233 in words is "two hundred thirteen million, three hundred three thousand, two hundred thirty-three".