123423321 has 8 divisors (see below), whose sum is σ = 188073664. Its totient is φ = 70527600.

The previous prime is 123423319. The next prime is 123423341. The reversal of 123423321 is 123324321.

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

It is not a de Polignac number, because 123423321 - 2¹ = 123423319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5877301 = 123423321 / (1 + 2 + 3 + 4 + 2 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123423341) 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, 2938630 + ... + 2938671.

It is an arithmetic number, because the mean of its divisors is an integer number (23509208).

Almost surely, 2^123423321 is an apocalyptic number.

It is an amenable number.

123423321 is a deficient number, since it is larger than the sum of its proper divisors (64650343).

123423321 is an equidigital number, since it uses as much as digits as its factorization.

123423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5877311.

The product of its digits is 864, while the sum is 21.

The square root of 123423321 is about 11109.6048984651. The cubic root of 123423321 is about 497.8888600552. Note that the first 4 decimals are identical.

Adding to 123423321 its reverse (123324321), we get a palindrome (246747642).

The spelling of 123423321 in words is "one hundred twenty-three million, four hundred twenty-three thousand, three hundred twenty-one".