231031221323 has 8 divisors (see below), whose sum is σ = 267652609248. Its totient is φ = 195314065344.

The previous prime is 231031221251. The next prime is 231031221359. The reversal of 231031221323 is 323122130132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231031221323 - 2¹⁴ = 231031204939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231031221623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226057436 + ... + 226058457.

It is an arithmetic number, because the mean of its divisors is an integer number (33456576156).

Almost surely, 2^231031221323 is an apocalyptic number.

231031221323 is a deficient number, since it is larger than the sum of its proper divisors (36621387925).

231031221323 is an equidigital number, since it uses as much as digits as its factorization.

231031221323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452115973.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 231031221323 its reverse (323122130132), we get a palindrome (554153351455).

The spelling of 231031221323 in words is "two hundred thirty-one billion, thirty-one million, two hundred twenty-one thousand, three hundred twenty-three".