123031321 has 8 divisors (see below), whose sum is σ = 140935424. Its totient is φ = 105209280.

The previous prime is 123031303. The next prime is 123031331. The reversal of 123031321 is 123130321.

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 123031321 - 2¹⁷ = 122900249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123031295 and 123031304.

It is not an unprimeable number, because it can be changed into a prime (123031331) 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, 17265 + ... + 23326.

It is an arithmetic number, because the mean of its divisors is an integer number (17616928).

Almost surely, 2^123031321 is an apocalyptic number.

It is an amenable number.

123031321 is a deficient number, since it is larger than the sum of its proper divisors (17904103).

123031321 is an equidigital number, since it uses as much as digits as its factorization.

123031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41031.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 123031321 is about 11091.9484762597. The cubic root of 123031321 is about 497.3611925570.

Adding to 123031321 its reverse (123130321), we get a palindrome (246161642).

The spelling of 123031321 in words is "one hundred twenty-three million, thirty-one thousand, three hundred twenty-one".