321440241040 has 40 divisors (see below), whose sum is σ = 753233218560. Its totient is φ = 127563682176.

The previous prime is 321440240987. The next prime is 321440241137. The reversal of 321440241040 is 40142044123.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 321440240996 and 321440241014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15808750 + ... + 15829069.

It is an arithmetic number, because the mean of its divisors is an integer number (18830830464).

Almost surely, 2^321440241040 is an apocalyptic number.

It is an amenable number.

321440241040 is an abundant number, since it is smaller than the sum of its proper divisors (431792977520).

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

321440241040 is a wasteful number, since it uses less digits than its factorization.

321440241040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31637959 (or 31637953 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 321440241040 its reverse (40142044123), we get a palindrome (361582285163).

The spelling of 321440241040 in words is "three hundred twenty-one billion, four hundred forty million, two hundred forty-one thousand, forty".