328909311 has 24 divisors (see below), whose sum is σ = 487772480. Its totient is φ = 213497856.

The previous prime is 328909307. The next prime is 328909331. The reversal of 328909311 is 113909823.

It is not a de Polignac number, because 328909311 - 2² = 328909307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328909331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48735 + ... + 55071.

Almost surely, 2^328909311 is an apocalyptic number.

328909311 is a deficient number, since it is larger than the sum of its proper divisors (158863169).

328909311 is a wasteful number, since it uses less digits than its factorization.

328909311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6495 (or 6492 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 328909311 is about 18135.8570517084. The cubic root of 328909311 is about 690.2801571853.

The spelling of 328909311 in words is "three hundred twenty-eight million, nine hundred nine thousand, three hundred eleven".