220343623 has 2 divisors, whose sum is σ = 220343624. Its totient is φ = 220343622.

The previous prime is 220343597. The next prime is 220343663. The reversal of 220343623 is 326343022.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220343623 - 2²⁵ = 186789191 is a prime.

It is a super-2 number, since 2×220343623² = 97102624393532258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220343663) 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, 110171811 + 110171812.

It is an arithmetic number, because the mean of its divisors is an integer number (110171812).

Almost surely, 2^220343623 is an apocalyptic number.

220343623 is a deficient number, since it is larger than the sum of its proper divisors (1).

220343623 is an equidigital number, since it uses as much as digits as its factorization.

220343623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 220343623 is about 14843.9759835430. The cubic root of 220343623 is about 603.9952112466.

Adding to 220343623 its reverse (326343022), we get a palindrome (546686645).

The spelling of 220343623 in words is "two hundred twenty million, three hundred forty-three thousand, six hundred twenty-three".