123315321 has 8 divisors (see below), whose sum is σ = 164475360. Its totient is φ = 82182752.

The previous prime is 123315319. The next prime is 123315329. The reversal of 123315321 is 123513321.

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 123315321 - 2¹ = 123315319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123315329) 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, 8566 + ... + 17888.

It is an arithmetic number, because the mean of its divisors is an integer number (20559420).

Almost surely, 2^123315321 is an apocalyptic number.

It is an amenable number.

123315321 is a deficient number, since it is larger than the sum of its proper divisors (41160039).

123315321 is an equidigital number, since it uses as much as digits as its factorization.

123315321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13735.

The product of its digits is 540, while the sum is 21.

The square root of 123315321 is about 11104.7431757785. The cubic root of 123315321 is about 497.7435939141.

Adding to 123315321 its reverse (123513321), we get a palindrome (246828642).

The spelling of 123315321 in words is "one hundred twenty-three million, three hundred fifteen thousand, three hundred twenty-one".