220340443 has 2 divisors, whose sum is σ = 220340444. Its totient is φ = 220340442.

The previous prime is 220340431. The next prime is 220340453. The reversal of 220340443 is 344043022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220340443 - 2¹⁷ = 220209371 is a prime.

It is equal to p_12140176 and since 220340443 and 12140176 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (220340453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110170221 + 110170222.

It is an arithmetic number, because the mean of its divisors is an integer number (110170222).

Almost surely, 2^220340443 is an apocalyptic number.

220340443 is a deficient number, since it is larger than the sum of its proper divisors (1).

220340443 is an equidigital number, since it uses as much as digits as its factorization.

220340443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 220340443 is about 14843.8688689977. The cubic root of 220340443 is about 603.9923056123.

Adding to 220340443 its reverse (344043022), we get a palindrome (564383465).

The spelling of 220340443 in words is "two hundred twenty million, three hundred forty thousand, four hundred forty-three".