321000002043 has 16 divisors (see below), whose sum is σ = 489520035840. Its totient is φ = 183287131776.

The previous prime is 321000002027. The next prime is 321000002083. The reversal of 321000002043 is 340200000123.

It is not a de Polignac number, because 321000002043 - 2⁴ = 321000002027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321000002083) 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 15 ways as a sum of consecutive naturals, for example, 5865483 + ... + 5919956.

It is an arithmetic number, because the mean of its divisors is an integer number (30595002240).

Almost surely, 2^321000002043 is an apocalyptic number.

321000002043 is a deficient number, since it is larger than the sum of its proper divisors (168520033797).

321000002043 is a wasteful number, since it uses less digits than its factorization.

321000002043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11786746.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 321000002043 its reverse (340200000123), we get a palindrome (661200002166).

The spelling of 321000002043 in words is "three hundred twenty-one billion, two thousand, forty-three".