203320213 has 2 divisors, whose sum is σ = 203320214. Its totient is φ = 203320212.

The previous prime is 203320199. The next prime is 203320231. The reversal of 203320213 is 312023302.

Together with next prime (203320231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195356529 + 7963684 = 13977^2 + 2822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203320213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203320283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101660106 + 101660107.

It is an arithmetic number, because the mean of its divisors is an integer number (101660107).

Almost surely, 2^203320213 is an apocalyptic number.

It is an amenable number.

203320213 is a deficient number, since it is larger than the sum of its proper divisors (1).

203320213 is an equidigital number, since it uses as much as digits as its factorization.

203320213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 203320213 is about 14259.0396941730. The cubic root of 203320213 is about 588.0219238821.

Adding to 203320213 its reverse (312023302), we get a palindrome (515343515).

It can be divided in two parts, 20 and 3320213, that added together give a palindrome (3320233).

The spelling of 203320213 in words is "two hundred three million, three hundred twenty thousand, two hundred thirteen".