43123103011 has 2 divisors, whose sum is σ = 43123103012. Its totient is φ = 43123103010.

The previous prime is 43123102999. The next prime is 43123103063. The reversal of 43123103011 is 11030132134.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43123103011 is a prime.

It is a super-2 number, since 2×43123103011² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43123103011.

It is not a weakly prime, because it can be changed into another prime (43123101011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21561551505 + 21561551506.

It is an arithmetic number, because the mean of its divisors is an integer number (21561551506).

Almost surely, 2^43123103011 is an apocalyptic number.

43123103011 is a deficient number, since it is larger than the sum of its proper divisors (1).

43123103011 is an equidigital number, since it uses as much as digits as its factorization.

43123103011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 43123103011 its reverse (11030132134), we get a palindrome (54153235145).

The spelling of 43123103011 in words is "forty-three billion, one hundred twenty-three million, one hundred three thousand, eleven".