233220213 has 12 divisors (see below), whose sum is σ = 345978828. Its totient is φ = 151277760.

The previous prime is 233220209. The next prime is 233220227. The reversal of 233220213 is 312022332.

It is a happy number.

233220213 is a `hidden beast` number, since 233 + 220 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 220879044 + 12341169 = 14862^2 + 3513^2 .

It is not a de Polignac number, because 233220213 - 2² = 233220209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233220293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 349848 + ... + 350513.

It is an arithmetic number, because the mean of its divisors is an integer number (28831569).

Almost surely, 2^233220213 is an apocalyptic number.

It is an amenable number.

233220213 is a deficient number, since it is larger than the sum of its proper divisors (112758615).

233220213 is a wasteful number, since it uses less digits than its factorization.

233220213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700404 (or 700401 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 233220213 is about 15271.5491355658. The cubic root of 233220213 is about 615.5387466333.

Adding to 233220213 its reverse (312022332), we get a palindrome (545242545).

The spelling of 233220213 in words is "two hundred thirty-three million, two hundred twenty thousand, two hundred thirteen".