212233313 has 4 divisors (see below), whose sum is σ = 212272788. Its totient is φ = 212193840.

The previous prime is 212233309. The next prime is 212233331. The reversal of 212233313 is 313332212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121374289 + 90859024 = 11017^2 + 9532^2 .

It is a cyclic number.

It is not a de Polignac number, because 212233313 - 2² = 212233309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212233013) 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 in 3 ways as a sum of consecutive naturals, for example, 10106 + ... + 22947.

It is an arithmetic number, because the mean of its divisors is an integer number (53068197).

Almost surely, 2^212233313 is an apocalyptic number.

It is an amenable number.

212233313 is a deficient number, since it is larger than the sum of its proper divisors (39475).

212233313 is an equidigital number, since it uses as much as digits as its factorization.

212233313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39474.

The product of its digits is 648, while the sum is 20.

The square root of 212233313 is about 14568.2295767193. The cubic root of 212233313 is about 596.4918550268.

Adding to 212233313 its reverse (313332212), we get a palindrome (525565525).

The spelling of 212233313 in words is "two hundred twelve million, two hundred thirty-three thousand, three hundred thirteen".