221231230323 has 4 divisors (see below), whose sum is σ = 294974973768. Its totient is φ = 147487486880.

The previous prime is 221231230309. The next prime is 221231230343. The reversal of 221231230323 is 323032132122.

221231230323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 221231230323 - 2⁹ = 221231229811 is a prime.

It is a super-3 number, since 3×221231230323³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221231230293 and 221231230302.

It is not an unprimeable number, because it can be changed into a prime (221231230343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36871871718 + ... + 36871871723.

It is an arithmetic number, because the mean of its divisors is an integer number (73743743442).

Almost surely, 2^221231230323 is an apocalyptic number.

221231230323 is a deficient number, since it is larger than the sum of its proper divisors (73743743445).

221231230323 is an equidigital number, since it uses as much as digits as its factorization.

221231230323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73743743444.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 221231230323 its reverse (323032132122), we get a palindrome (544263362445).

The spelling of 221231230323 in words is "two hundred twenty-one billion, two hundred thirty-one million, two hundred thirty thousand, three hundred twenty-three".