321131112223 has 4 divisors (see below), whose sum is σ = 321149049408. Its totient is φ = 321113175040.

The previous prime is 321131112209. The next prime is 321131112227. The reversal of 321131112223 is 322211131123.

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 321131112223 - 2¹⁷ = 321130981151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321131112194 and 321131112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321131112227) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8941711 + ... + 8977552.

It is an arithmetic number, because the mean of its divisors is an integer number (80287262352).

Almost surely, 2^321131112223 is an apocalyptic number.

321131112223 is a deficient number, since it is larger than the sum of its proper divisors (17937185).

321131112223 is a wasteful number, since it uses less digits than its factorization.

321131112223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17937184.

The product of its digits is 432, while the sum is 22.

Adding to 321131112223 its reverse (322211131123), we get a palindrome (643342243346).

The spelling of 321131112223 in words is "three hundred twenty-one billion, one hundred thirty-one million, one hundred twelve thousand, two hundred twenty-three".