213302213 has 8 divisors (see below), whose sum is σ = 231358680. Its totient is φ = 195857920.

The previous prime is 213302183. The next prime is 213302239. The reversal of 213302213 is 312203312.

It can be written as a sum of positive squares in 4 ways, for example, as 15984004 + 197318209 = 3998^2 + 14047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213302213 - 2¹² = 213298117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213302191 and 213302200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213302293) 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 7 ways as a sum of consecutive naturals, for example, 152318 + ... + 153711.

It is an arithmetic number, because the mean of its divisors is an integer number (28919835).

Almost surely, 2^213302213 is an apocalyptic number.

It is an amenable number.

213302213 is a deficient number, since it is larger than the sum of its proper divisors (18056467).

213302213 is a wasteful number, since it uses less digits than its factorization.

213302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306087.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 213302213 is about 14604.8694961646. The cubic root of 213302213 is about 597.4915767094.

Adding to 213302213 its reverse (312203312), we get a palindrome (525505525).

The spelling of 213302213 in words is "two hundred thirteen million, three hundred two thousand, two hundred thirteen".