220434023 has 2 divisors, whose sum is σ = 220434024. Its totient is φ = 220434022.

The previous prime is 220434007. The next prime is 220434031. The reversal of 220434023 is 320434022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220434023 - 2⁴ = 220434007 is a prime.

It is a super-4 number, since 4×220434023⁴ (a number of 34 digits) contains 4444 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 220433986 and 220434004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220434083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110217011 + 110217012.

It is an arithmetic number, because the mean of its divisors is an integer number (110217012).

Almost surely, 2^220434023 is an apocalyptic number.

220434023 is a deficient number, since it is larger than the sum of its proper divisors (1).

220434023 is an equidigital number, since it uses as much as digits as its factorization.

220434023 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 220434023 is about 14847.0206775636. The cubic root of 220434023 is about 604.0777999793.

Adding to 220434023 its reverse (320434022), we get a palindrome (540868045).

Subtracting 220434023 from its reverse (320434022), we obtain a palindrome (99999999).

The spelling of 220434023 in words is "two hundred twenty million, four hundred thirty-four thousand, twenty-three".