321040223403344 has 80 divisors (see below), whose sum is σ = 632330971084800. Its totient is φ = 157881420632448.

The previous prime is 321040223403337. The next prime is 321040223403353. The reversal of 321040223403344 is 443304322040123.

It is a super-2 number, since 2×321040223403344² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 242117237 + ... + 243439595.

It is an arithmetic number, because the mean of its divisors is an integer number (7904137138560).

Almost surely, 2^{321040223403344} is an apocalyptic number.

It is an amenable number.

321040223403344 is a deficient number, since it is larger than the sum of its proper divisors (311290747681456).

321040223403344 is a wasteful number, since it uses less digits than its factorization.

321040223403344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323472 (or 1323466 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 321040223403344 its reverse (443304322040123), we get a palindrome (764344545443467).

The spelling of 321040223403344 in words is "three hundred twenty-one trillion, forty billion, two hundred twenty-three million, four hundred three thousand, three hundred forty-four".