321430040444321 has 4 divisors (see below), whose sum is σ = 321430226553492. Its totient is φ = 321429854335152.

The previous prime is 321430040444231. The next prime is 321430040444327. The reversal of 321430040444321 is 123444040034123.

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

It can be written as a sum of positive squares in 2 ways, for example, as 141835332767296 + 179594707677025 = 11909464^2 + 13401295^2 .

It is a cyclic number.

It is not a de Polignac number, because 321430040444321 - 2³⁰ = 321428966702497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321430040444327) 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, 90439430 + ... + 93926303.

It is an arithmetic number, because the mean of its divisors is an integer number (80357556638373).

Almost surely, 2^{321430040444321} is an apocalyptic number.

It is an amenable number.

321430040444321 is a deficient number, since it is larger than the sum of its proper divisors (186109171).

321430040444321 is a wasteful number, since it uses less digits than its factorization.

321430040444321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186109170.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 321430040444321 its reverse (123444040034123), we get a palindrome (444874080478444).

The spelling of 321430040444321 in words is "three hundred twenty-one trillion, four hundred thirty billion, forty million, four hundred forty-four thousand, three hundred twenty-one".