329684969123 has 4 divisors (see below), whose sum is σ = 329686117488. Its totient is φ = 329683820760.

The previous prime is 329684969083. The next prime is 329684969137. The reversal of 329684969123 is 321969486923.

It is a Cunningham number, because it is equal to 574182²-1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321969486923 = 7 ⋅45995640989.

It is a cyclic number.

It is not a de Polignac number, because 329684969123 - 2⁸ = 329684968867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (329684969723) 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, 287090 + ... + 861272.

It is an arithmetic number, because the mean of its divisors is an integer number (82421529372).

Almost surely, 2^329684969123 is an apocalyptic number.

329684969123 is a deficient number, since it is larger than the sum of its proper divisors (1148365).

329684969123 is an equidigital number, since it uses as much as digits as its factorization.

329684969123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148364.

The product of its digits is 30233088, while the sum is 62.

The spelling of 329684969123 in words is "three hundred twenty-nine billion, six hundred eighty-four million, nine hundred sixty-nine thousand, one hundred twenty-three".