123430511047 has 2 divisors, whose sum is σ = 123430511048. Its totient is φ = 123430511046.

The previous prime is 123430511027. The next prime is 123430511081. The reversal of 123430511047 is 740115034321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123430511047 - 2¹⁹ = 123429986759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123430511027) 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, 61715255523 + 61715255524.

It is an arithmetic number, because the mean of its divisors is an integer number (61715255524).

Almost surely, 2^123430511047 is an apocalyptic number.

123430511047 is a deficient number, since it is larger than the sum of its proper divisors (1).

123430511047 is an equidigital number, since it uses as much as digits as its factorization.

123430511047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

Adding to 123430511047 its reverse (740115034321), we get a palindrome (863545545368).

The spelling of 123430511047 in words is "one hundred twenty-three billion, four hundred thirty million, five hundred eleven thousand, forty-seven".