123143011447 has 2 divisors, whose sum is σ = 123143011448. Its totient is φ = 123143011446.

The previous prime is 123143011441. The next prime is 123143011483. The reversal of 123143011447 is 744110341321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123143011447 - 2⁷ = 123143011319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123143011441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61571505723 + 61571505724.

It is an arithmetic number, because the mean of its divisors is an integer number (61571505724).

Almost surely, 2^123143011447 is an apocalyptic number.

123143011447 is a deficient number, since it is larger than the sum of its proper divisors (1).

123143011447 is an equidigital number, since it uses as much as digits as its factorization.

123143011447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

Adding to 123143011447 its reverse (744110341321), we get a palindrome (867253352768).

The spelling of 123143011447 in words is "one hundred twenty-three billion, one hundred forty-three million, eleven thousand, four hundred forty-seven".