321320331341 has 4 divisors (see below), whose sum is σ = 321322255452. Its totient is φ = 321318407232.

The previous prime is 321320331317. The next prime is 321320331361. The reversal of 321320331341 is 143133023123.

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 32102247241 + 289218084100 = 179171^2 + 537790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321320331341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321320331341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321320331361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684956 + ... + 1054421.

It is an arithmetic number, because the mean of its divisors is an integer number (80330563863).

Almost surely, 2^321320331341 is an apocalyptic number.

It is an amenable number.

321320331341 is a deficient number, since it is larger than the sum of its proper divisors (1924111).

321320331341 is a wasteful number, since it uses less digits than its factorization.

321320331341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924110.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 321320331341 its reverse (143133023123), we get a palindrome (464453354464).

The spelling of 321320331341 in words is "three hundred twenty-one billion, three hundred twenty million, three hundred thirty-one thousand, three hundred forty-one".