321304143124040 has 32 divisors (see below), whose sum is σ = 722938719543480. Its totient is φ = 128520875469312.

The previous prime is 321304143123961. The next prime is 321304143124061. The reversal of 321304143124040 is 40421341403123.

It can be written as a sum of positive squares in 4 ways, for example, as 290673652115716 + 30630491008324 = 17049154^2 + 5534482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321304143123988 and 321304143124006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17750039 + ... + 30946278.

Almost surely, 2^{321304143124040} is an apocalyptic number.

It is an amenable number.

321304143124040 is an abundant number, since it is smaller than the sum of its proper divisors (401634576419440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321304143124040 is a wasteful number, since it uses less digits than its factorization.

321304143124040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48861281 (or 48861277 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 321304143124040 its reverse (40421341403123), we get a palindrome (361725484527163).

The spelling of 321304143124040 in words is "three hundred twenty-one trillion, three hundred four billion, one hundred forty-three million, one hundred twenty-four thousand, forty".