213331189 has 4 divisors (see below), whose sum is σ = 213396256. Its totient is φ = 213266124.

The previous prime is 213331169. The next prime is 213331193. The reversal of 213331189 is 981133312.

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 213331189 - 2⁷ = 213331061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213331189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213331109) 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 3 ways as a sum of consecutive naturals, for example, 27339 + ... + 34264.

It is an arithmetic number, because the mean of its divisors is an integer number (53349064).

Almost surely, 2^213331189 is an apocalyptic number.

It is an amenable number.

213331189 is a deficient number, since it is larger than the sum of its proper divisors (65067).

213331189 is an equidigital number, since it uses as much as digits as its factorization.

213331189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65066.

The product of its digits is 3888, while the sum is 31.

The square root of 213331189 is about 14605.8614603864. The cubic root of 213331189 is about 597.5186308623.

It can be divided in two parts, 21333 and 1189, that added together give a palindrome (22522).

The spelling of 213331189 in words is "two hundred thirteen million, three hundred thirty-one thousand, one hundred eighty-nine".