321012030000043 has 4 divisors (see below), whose sum is σ = 321218734463928. Its totient is φ = 320805325536160.

The previous prime is 321012030000031. The next prime is 321012030000047. The reversal of 321012030000043 is 340000030210123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321012030000043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321012030000047) 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 in 3 ways as a sum of consecutive naturals, for example, 103352229613 + ... + 103352232718.

It is an arithmetic number, because the mean of its divisors is an integer number (80304683615982).

Almost surely, 2^{321012030000043} is an apocalyptic number.

321012030000043 is a deficient number, since it is larger than the sum of its proper divisors (206704463885).

321012030000043 is a wasteful number, since it uses less digits than its factorization.

321012030000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206704463884.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 321012030000043 its reverse (340000030210123), we get a palindrome (661012060210166).

The spelling of 321012030000043 in words is "three hundred twenty-one trillion, twelve billion, thirty million, forty-three", and thus it is an aban number.