213224305 has 8 divisors (see below), whose sum is σ = 292421952. Its totient is φ = 146210928.

The previous prime is 213224279. The next prime is 213224311. The reversal of 213224305 is 503422312.

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 213224305 - 2⁷ = 213224177 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3046027 + ... + 3046096.

It is an arithmetic number, because the mean of its divisors is an integer number (36552744).

Almost surely, 2^213224305 is an apocalyptic number.

It is an amenable number.

213224305 is a deficient number, since it is larger than the sum of its proper divisors (79197647).

213224305 is an equidigital number, since it uses as much as digits as its factorization.

213224305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6092135.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213224305 is about 14602.2020599634. The cubic root of 213224305 is about 597.4188238429.

Adding to 213224305 its reverse (503422312), we get a palindrome (716646617).

The spelling of 213224305 in words is "two hundred thirteen million, two hundred twenty-four thousand, three hundred five".