43434221023 has 2 divisors, whose sum is σ = 43434221024. Its totient is φ = 43434221022.

The previous prime is 43434221003. The next prime is 43434221029. The reversal of 43434221023 is 32012243434.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43434221023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43434220982 and 43434221000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43434221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21717110511 + 21717110512.

It is an arithmetic number, because the mean of its divisors is an integer number (21717110512).

Almost surely, 2^43434221023 is an apocalyptic number.

43434221023 is a deficient number, since it is larger than the sum of its proper divisors (1).

43434221023 is an equidigital number, since it uses as much as digits as its factorization.

43434221023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 43434221023 its reverse (32012243434), we get a palindrome (75446464457).

The spelling of 43434221023 in words is "forty-three billion, four hundred thirty-four million, two hundred twenty-one thousand, twenty-three".