43123300013 has 2 divisors, whose sum is σ = 43123300014. Its totient is φ = 43123300012.

The previous prime is 43123300007. The next prime is 43123300043. The reversal of 43123300013 is 31000332134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36579622564 + 6543677449 = 191258^2 + 80893^2 .

It is a cyclic number.

It is not a de Polignac number, because 43123300013 - 2⁴ = 43123299997 is a prime.

It is a super-2 number, since 2×43123300013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43123300043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561650006 + 21561650007.

It is an arithmetic number, because the mean of its divisors is an integer number (21561650007).

Almost surely, 2^43123300013 is an apocalyptic number.

It is an amenable number.

43123300013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43123300013 is an equidigital number, since it uses as much as digits as its factorization.

43123300013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 43123300013 its reverse (31000332134), we get a palindrome (74123632147).

The spelling of 43123300013 in words is "forty-three billion, one hundred twenty-three million, three hundred thousand, thirteen".