328243834291 has 4 divisors (see below), whose sum is σ = 329521047912. Its totient is φ = 326966620672.

The previous prime is 328243834267. The next prime is 328243834327. The reversal of 328243834291 is 192438342823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 192438342823 = 17 ⋅11319902519.

It is a cyclic number.

It is not a de Polignac number, because 328243834291 - 2²⁹ = 327706963379 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328243834591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638606425 + ... + 638606938.

It is an arithmetic number, because the mean of its divisors is an integer number (82380261978).

Almost surely, 2^328243834291 is an apocalyptic number.

328243834291 is a deficient number, since it is larger than the sum of its proper divisors (1277213621).

328243834291 is a wasteful number, since it uses less digits than its factorization.

328243834291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277213620.

The product of its digits is 1990656, while the sum is 49.

The spelling of 328243834291 in words is "three hundred twenty-eight billion, two hundred forty-three million, eight hundred thirty-four thousand, two hundred ninety-one".