321120313103 has 4 divisors (see below), whose sum is σ = 321161707680. Its totient is φ = 321078918528.

The previous prime is 321120313057. The next prime is 321120313117. The reversal of 321120313103 is 301313021123.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 321120313103 - 2³⁰ = 320046571279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321120313123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20685650 + ... + 20701167.

It is an arithmetic number, because the mean of its divisors is an integer number (80290426920).

Almost surely, 2^321120313103 is an apocalyptic number.

321120313103 is a deficient number, since it is larger than the sum of its proper divisors (41394577).

321120313103 is an equidigital number, since it uses as much as digits as its factorization.

321120313103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41394576.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 321120313103 its reverse (301313021123), we get a palindrome (622433334226).

The spelling of 321120313103 in words is "three hundred twenty-one billion, one hundred twenty million, three hundred thirteen thousand, one hundred three".