220403243 has 2 divisors, whose sum is σ = 220403244. Its totient is φ = 220403242.

The previous prime is 220403233. The next prime is 220403329. The reversal of 220403243 is 342304022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220403243 - 2¹⁸ = 220141099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220403233) 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 as a sum of consecutive naturals, namely, 110201621 + 110201622.

It is an arithmetic number, because the mean of its divisors is an integer number (110201622).

Almost surely, 2^220403243 is an apocalyptic number.

220403243 is a deficient number, since it is larger than the sum of its proper divisors (1).

220403243 is an equidigital number, since it uses as much as digits as its factorization.

220403243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 220403243 is about 14845.9840697746. The cubic root of 220403243 is about 604.0496821478.

Adding to 220403243 its reverse (342304022), we get a palindrome (562707265).

The spelling of 220403243 in words is "two hundred twenty million, four hundred three thousand, two hundred forty-three".