123443030161 has 16 divisors (see below), whose sum is σ = 139929808896. Its totient is φ = 107881650000.

The previous prime is 123443030159. The next prime is 123443030167. The reversal of 123443030161 is 161030344321.

It is a cyclic number.

It is not a de Polignac number, because 123443030161 - 2¹ = 123443030159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123443030167) 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 in 15 ways as a sum of consecutive naturals, for example, 1147195 + ... + 1250176.

It is an arithmetic number, because the mean of its divisors is an integer number (8745613056).

Almost surely, 2^123443030161 is an apocalyptic number.

123443030161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123443030161 is a deficient number, since it is larger than the sum of its proper divisors (16486778735).

123443030161 is a wasteful number, since it uses less digits than its factorization.

123443030161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397564.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 123443030161 its reverse (161030344321), we get a palindrome (284473374482).

The spelling of 123443030161 in words is "one hundred twenty-three billion, four hundred forty-three million, thirty thousand, one hundred sixty-one".