321213311103 has 24 divisors (see below), whose sum is σ = 447518487600. Its totient is φ = 204905754240.

The previous prime is 321213311071. The next prime is 321213311137. The reversal of 321213311103 is 301113312123.

It is a happy number.

It is not a de Polignac number, because 321213311103 - 2⁵ = 321213311071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321213311103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321213311803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 369348 + ... + 882521.

It is an arithmetic number, because the mean of its divisors is an integer number (18646603650).

Almost surely, 2^321213311103 is an apocalyptic number.

321213311103 is a deficient number, since it is larger than the sum of its proper divisors (126305176497).

321213311103 is a wasteful number, since it uses less digits than its factorization.

321213311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252023 (or 1251992 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 321213311103 its reverse (301113312123), we get a palindrome (622326623226).

The spelling of 321213311103 in words is "three hundred twenty-one billion, two hundred thirteen million, three hundred eleven thousand, one hundred three".