213312089 has 2 divisors, whose sum is σ = 213312090. Its totient is φ = 213312088.

The previous prime is 213312083. The next prime is 213312103. The reversal of 213312089 is 980213312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153760000 + 59552089 = 12400^2 + 7717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213312089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213312083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106656044 + 106656045.

It is an arithmetic number, because the mean of its divisors is an integer number (106656045).

Almost surely, 2^213312089 is an apocalyptic number.

It is an amenable number.

213312089 is a deficient number, since it is larger than the sum of its proper divisors (1).

213312089 is an equidigital number, since it uses as much as digits as its factorization.

213312089 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 213312089 is about 14605.2075986615. The cubic root of 213312089 is about 597.5007979542.

The spelling of 213312089 in words is "two hundred thirteen million, three hundred twelve thousand, eighty-nine".