233188213 has 2 divisors, whose sum is σ = 233188214. Its totient is φ = 233188212.

The previous prime is 233188199. The next prime is 233188223. The reversal of 233188213 is 312881332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232776049 + 412164 = 15257^2 + 642^2 .

It is a cyclic number.

It is not a de Polignac number, because 233188213 - 2¹³ = 233180021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233188223) 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, 116594106 + 116594107.

It is an arithmetic number, because the mean of its divisors is an integer number (116594107).

Almost surely, 2^233188213 is an apocalyptic number.

It is an amenable number.

233188213 is a deficient number, since it is larger than the sum of its proper divisors (1).

233188213 is an equidigital number, since it uses as much as digits as its factorization.

233188213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 233188213 is about 15270.5013997576. The cubic root of 233188213 is about 615.5105927831.

The spelling of 233188213 in words is "two hundred thirty-three million, one hundred eighty-eight thousand, two hundred thirteen".