20334343243 has 2 divisors, whose sum is σ = 20334343244. Its totient is φ = 20334343242.

The previous prime is 20334343223. The next prime is 20334343259. The reversal of 20334343243 is 34234343302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20334343243 - 2⁹ = 20334342731 is a prime.

It is not a weakly prime, because it can be changed into another prime (20334343213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10167171621 + 10167171622.

It is an arithmetic number, because the mean of its divisors is an integer number (10167171622).

Almost surely, 2^20334343243 is an apocalyptic number.

20334343243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20334343243 is an equidigital number, since it uses as much as digits as its factorization.

20334343243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 31.

Adding to 20334343243 its reverse (34234343302), we get a palindrome (54568686545).

The spelling of 20334343243 in words is "twenty billion, three hundred thirty-four million, three hundred forty-three thousand, two hundred forty-three".