321000403123 has 2 divisors, whose sum is σ = 321000403124. Its totient is φ = 321000403122.

The previous prime is 321000403099. The next prime is 321000403223. The reversal of 321000403123 is 321304000123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321000403123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321000403123.

It is not a weakly prime, because it can be changed into another prime (321000403223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160500201561 + 160500201562.

It is an arithmetic number, because the mean of its divisors is an integer number (160500201562).

Almost surely, 2^321000403123 is an apocalyptic number.

321000403123 is a deficient number, since it is larger than the sum of its proper divisors (1).

321000403123 is an equidigital number, since it uses as much as digits as its factorization.

321000403123 is an odious number, because the sum of its binary digits is odd.

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

Adding to 321000403123 its reverse (321304000123), we get a palindrome (642304403246).

The spelling of 321000403123 in words is "three hundred twenty-one billion, four hundred three thousand, one hundred twenty-three".