321312012023 has 4 divisors (see below), whose sum is σ = 321340719480. Its totient is φ = 321283304568.

The previous prime is 321312012011. The next prime is 321312012053. The reversal of 321312012023 is 320210213123.

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 321312012023 - 2¹² = 321312007927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321312011986 and 321312012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321312012053) 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, 14336933 + ... + 14359326.

It is an arithmetic number, because the mean of its divisors is an integer number (80335179870).

Almost surely, 2^321312012023 is an apocalyptic number.

321312012023 is a deficient number, since it is larger than the sum of its proper divisors (28707457).

321312012023 is a wasteful number, since it uses less digits than its factorization.

321312012023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28707456.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 321312012023 its reverse (320210213123), we get a palindrome (641522225146).

The spelling of 321312012023 in words is "three hundred twenty-one billion, three hundred twelve million, twelve thousand, twenty-three".