321031113103 has 4 divisors (see below), whose sum is σ = 321567058800. Its totient is φ = 320495167408.

The previous prime is 321031113059. The next prime is 321031113131. The reversal of 321031113103 is 301311130123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301311130123 = 47 ⋅6410875109.

It is a cyclic number.

It is not a de Polignac number, because 321031113103 - 2²⁵ = 320997558671 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 (321031153103) 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, 267971950 + ... + 267973147.

It is an arithmetic number, because the mean of its divisors is an integer number (80391764700).

Almost surely, 2^321031113103 is an apocalyptic number.

321031113103 is a deficient number, since it is larger than the sum of its proper divisors (535945697).

321031113103 is an equidigital number, since it uses as much as digits as its factorization.

321031113103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535945696.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 321031113103 its reverse (301311130123), we get a palindrome (622342243226).

The spelling of 321031113103 in words is "three hundred twenty-one billion, thirty-one million, one hundred thirteen thousand, one hundred three".