212303213 has 8 divisors (see below), whose sum is σ = 216631800. Its totient is φ = 207986688.

The previous prime is 212303209. The next prime is 212303219. The reversal of 212303213 is 312303212.

It can be written as a sum of positive squares in 4 ways, for example, as 104080804 + 108222409 = 10202^2 + 10403^2 .

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 212303213 - 2² = 212303209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212303191 and 212303200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212303219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38153 + ... + 43361.

It is an arithmetic number, because the mean of its divisors is an integer number (27078975).

Almost surely, 2^212303213 is an apocalyptic number.

It is an amenable number.

212303213 is a deficient number, since it is larger than the sum of its proper divisors (4328587).

212303213 is an equidigital number, since it uses as much as digits as its factorization.

212303213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

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

The square root of 212303213 is about 14570.6284353147. The cubic root of 212303213 is about 596.5573336008.

Adding to 212303213 its reverse (312303212), we get a palindrome (524606425).

Subtracting 212303213 from its reverse (312303212), we obtain a palindrome (99999999).

The spelling of 212303213 in words is "two hundred twelve million, three hundred three thousand, two hundred thirteen".