213330289 has 2 divisors, whose sum is σ = 213330290. Its totient is φ = 213330288.

The previous prime is 213330283. The next prime is 213330307. The reversal of 213330289 is 982033312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198951025 + 14379264 = 14105^2 + 3792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213330289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213330289.

It is not a weakly prime, because it can be changed into another prime (213330283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106665144 + 106665145.

It is an arithmetic number, because the mean of its divisors is an integer number (106665145).

Almost surely, 2^213330289 is an apocalyptic number.

It is an amenable number.

213330289 is a deficient number, since it is larger than the sum of its proper divisors (1).

213330289 is an equidigital number, since it uses as much as digits as its factorization.

213330289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 213330289 is about 14605.8306508052. The cubic root of 213330289 is about 597.5177905920.

The spelling of 213330289 in words is "two hundred thirteen million, three hundred thirty thousand, two hundred eighty-nine".