321123023 has 4 divisors (see below), whose sum is σ = 345824808. Its totient is φ = 296421240.

The previous prime is 321123007. The next prime is 321123067. The reversal of 321123023 is 320321123.

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 321123023 - 2⁴ = 321123007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321122992 and 321123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321123623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12350873 + ... + 12350898.

It is an arithmetic number, because the mean of its divisors is an integer number (86456202).

Almost surely, 2^321123023 is an apocalyptic number.

321123023 is a deficient number, since it is larger than the sum of its proper divisors (24701785).

321123023 is a wasteful number, since it uses less digits than its factorization.

321123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24701784.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 321123023 is about 17919.9057754219. The cubic root of 321123023 is about 684.7895871043.

Adding to 321123023 its reverse (320321123), we get a palindrome (641444146).

The spelling of 321123023 in words is "three hundred twenty-one million, one hundred twenty-three thousand, twenty-three".