321340123 has 8 divisors (see below), whose sum is σ = 346452848. Its totient is φ = 296283744.

The previous prime is 321340111. The next prime is 321340157. The reversal of 321340123 is 321043123.

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 321340123 - 2²¹ = 319242971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321340123.

It is not an unprimeable number, because it can be changed into a prime (321340183) 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, 1836 + ... + 25417.

It is an arithmetic number, because the mean of its divisors is an integer number (43306606).

Almost surely, 2^321340123 is an apocalyptic number.

321340123 is a deficient number, since it is larger than the sum of its proper divisors (25112725).

321340123 is a wasteful number, since it uses less digits than its factorization.

321340123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28173.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 321340123 is about 17925.9622614799. The cubic root of 321340123 is about 684.9438730719.

Adding to 321340123 its reverse (321043123), we get a palindrome (642383246).

The spelling of 321340123 in words is "three hundred twenty-one million, three hundred forty thousand, one hundred twenty-three".