213032189 has 2 divisors, whose sum is σ = 213032190. Its totient is φ = 213032188.

The previous prime is 213032167. The next prime is 213032221. The reversal of 213032189 is 981230312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129163225 + 83868964 = 11365^2 + 9158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213032189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213032089) 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, 106516094 + 106516095.

It is an arithmetic number, because the mean of its divisors is an integer number (106516095).

Almost surely, 2^213032189 is an apocalyptic number.

It is an amenable number.

213032189 is a deficient number, since it is larger than the sum of its proper divisors (1).

213032189 is an equidigital number, since it uses as much as digits as its factorization.

213032189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 213032189 is about 14595.6222546351. The cubic root of 213032189 is about 597.2393442998.

The spelling of 213032189 in words is "two hundred thirteen million, thirty-two thousand, one hundred eighty-nine".