123231342043 has 2 divisors, whose sum is σ = 123231342044. Its totient is φ = 123231342042.

The previous prime is 123231342019. The next prime is 123231342083. The reversal of 123231342043 is 340243132321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123231342043 is a prime.

It is not a weakly prime, because it can be changed into another prime (123231342083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615671021 + 61615671022.

It is an arithmetic number, because the mean of its divisors is an integer number (61615671022).

Almost surely, 2^123231342043 is an apocalyptic number.

123231342043 is a deficient number, since it is larger than the sum of its proper divisors (1).

123231342043 is an equidigital number, since it uses as much as digits as its factorization.

123231342043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 123231342043 its reverse (340243132321), we get a palindrome (463474474364).

The spelling of 123231342043 in words is "one hundred twenty-three billion, two hundred thirty-one million, three hundred forty-two thousand, forty-three".