13123204243 has 2 divisors, whose sum is σ = 13123204244. Its totient is φ = 13123204242.

The previous prime is 13123204229. The next prime is 13123204253. The reversal of 13123204243 is 34240232131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13123204243 - 2³³ = 4533269651 is a prime.

It is not a weakly prime, because it can be changed into another prime (13123204253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561602121 + 6561602122.

It is an arithmetic number, because the mean of its divisors is an integer number (6561602122).

Almost surely, 2^13123204243 is an apocalyptic number.

13123204243 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123204243 is an equidigital number, since it uses as much as digits as its factorization.

13123204243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13123204243 its reverse (34240232131), we get a palindrome (47363436374).

The spelling of 13123204243 in words is "thirteen billion, one hundred twenty-three million, two hundred four thousand, two hundred forty-three".