321023311423 has 4 divisors (see below), whose sum is σ = 321028418880. Its totient is φ = 321018203968.

The previous prime is 321023311379. The next prime is 321023311429. The reversal of 321023311423 is 324113320123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321023311423 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 (321023311429) 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, 2458258 + ... + 2585551.

It is an arithmetic number, because the mean of its divisors is an integer number (80257104720).

Almost surely, 2^321023311423 is an apocalyptic number.

321023311423 is a deficient number, since it is larger than the sum of its proper divisors (5107457).

321023311423 is an equidigital number, since it uses as much as digits as its factorization.

321023311423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5107456.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 321023311423 its reverse (324113320123), we get a palindrome (645136631546).

The spelling of 321023311423 in words is "three hundred twenty-one billion, twenty-three million, three hundred eleven thousand, four hundred twenty-three".