213307189 has 4 divisors (see below), whose sum is σ = 216007360. Its totient is φ = 210607020.

The previous prime is 213307147. The next prime is 213307231. The reversal of 213307189 is 981703312.

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 an interprime number because it is at equal distance from previous prime (213307147) and next prime (213307231).

It is a cyclic number.

It is not a de Polignac number, because 213307189 - 2¹⁵ = 213274421 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 (213707189) 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, 1349967 + ... + 1350124.

It is an arithmetic number, because the mean of its divisors is an integer number (54001840).

Almost surely, 2^213307189 is an apocalyptic number.

It is an amenable number.

213307189 is a deficient number, since it is larger than the sum of its proper divisors (2700171).

213307189 is an equidigital number, since it uses as much as digits as its factorization.

213307189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700170.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 213307189 is about 14605.0398493123. The cubic root of 213307189 is about 597.4962228480.

The spelling of 213307189 in words is "two hundred thirteen million, three hundred seven thousand, one hundred eighty-nine".