233312213 has 4 divisors (see below), whose sum is σ = 233356620. Its totient is φ = 233267808.

The previous prime is 233312203. The next prime is 233312237. The reversal of 233312213 is 312213332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100440484 + 132871729 = 10022^2 + 11527^2 .

It is a cyclic number.

It is not a de Polignac number, because 233312213 - 2⁸ = 233311957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233312203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13070 + ... + 25247.

It is an arithmetic number, because the mean of its divisors is an integer number (58339155).

Almost surely, 2^233312213 is an apocalyptic number.

It is an amenable number.

233312213 is a deficient number, since it is larger than the sum of its proper divisors (44407).

233312213 is an equidigital number, since it uses as much as digits as its factorization.

233312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44406.

The product of its digits is 648, while the sum is 20.

The square root of 233312213 is about 15274.5609756876. The cubic root of 233312213 is about 615.6196746102.

Adding to 233312213 its reverse (312213332), we get a palindrome (545525545).

The spelling of 233312213 in words is "two hundred thirty-three million, three hundred twelve thousand, two hundred thirteen".