123043045321 has 16 divisors (see below), whose sum is σ = 144053323776. Its totient is φ = 102920366736.

The previous prime is 123043045313. The next prime is 123043045331. The reversal of 123043045321 is 123540340321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123043045321 - 2³ = 123043045313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123043045321.

It is not an unprimeable number, because it can be changed into a prime (123043045331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1175761 + ... + 1276126.

It is an arithmetic number, because the mean of its divisors is an integer number (9003332736).

Almost surely, 2^123043045321 is an apocalyptic number.

It is an amenable number.

123043045321 is a deficient number, since it is larger than the sum of its proper divisors (21010278455).

123043045321 is a wasteful number, since it uses less digits than its factorization.

123043045321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452068.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 123043045321 its reverse (123540340321), we get a palindrome (246583385642).

The spelling of 123043045321 in words is "one hundred twenty-three billion, forty-three million, forty-five thousand, three hundred twenty-one".