321000123 has 8 divisors (see below), whose sum is σ = 439567888. Its totient is φ = 208216224.

The previous prime is 321000091. The next prime is 321000131.

It is a happy number.

321000123 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 321000123 - 2⁵ = 321000091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321000099 and 321000108.

It is not an unprimeable number, because it can be changed into a prime (321000143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1445836 + ... + 1446057.

It is an arithmetic number, because the mean of its divisors is an integer number (54945986).

Almost surely, 2^321000123 is an apocalyptic number.

321000123 is a deficient number, since it is larger than the sum of its proper divisors (118567765).

321000123 is a wasteful number, since it uses less digits than its factorization.

321000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891933.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 321000123 is about 17916.4762997639. The cubic root of 321000123 is about 684.7022152114.

It can be divided in two parts, 321000 and 123, that added together give a palindrome (321123).

The spelling of 321000123 in words is "three hundred twenty-one million, one hundred twenty-three", and thus it is an aban number.