213320293 has 2 divisors, whose sum is σ = 213320294. Its totient is φ = 213320292.

The previous prime is 213320287. The next prime is 213320311. The reversal of 213320293 is 392023312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148791204 + 64529089 = 12198^2 + 8033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213320293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213320203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106660146 + 106660147.

It is an arithmetic number, because the mean of its divisors is an integer number (106660147).

Almost surely, 2^213320293 is an apocalyptic number.

It is an amenable number.

213320293 is a deficient number, since it is larger than the sum of its proper divisors (1).

213320293 is an equidigital number, since it uses as much as digits as its factorization.

213320293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 213320293 is about 14605.4884546872. The cubic root of 213320293 is about 597.5084578321.

The spelling of 213320293 in words is "two hundred thirteen million, three hundred twenty thousand, two hundred ninety-three".