123311000321 has 4 divisors (see below), whose sum is σ = 123863964672. Its totient is φ = 122758035972.

The previous prime is 123311000299. The next prime is 123311000411. The reversal of 123311000321 is 123000113321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123000113321 = 31 ⋅3967745591.

It is a cyclic number.

It is not a de Polignac number, because 123311000321 - 2³⁰ = 122237258497 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 123311000321.

It is not an unprimeable number, because it can be changed into a prime (123311060321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276481841 + ... + 276482286.

It is an arithmetic number, because the mean of its divisors is an integer number (30965991168).

Almost surely, 2^123311000321 is an apocalyptic number.

It is an amenable number.

123311000321 is a deficient number, since it is larger than the sum of its proper divisors (552964351).

123311000321 is an equidigital number, since it uses as much as digits as its factorization.

123311000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552964350.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 123311000321 its reverse (123000113321), we get a palindrome (246311113642).

The spelling of 123311000321 in words is "one hundred twenty-three billion, three hundred eleven million, three hundred twenty-one", and thus it is an aban number.