328381147 has 4 divisors (see below), whose sum is σ = 328418896. Its totient is φ = 328343400.

The previous prime is 328381127. The next prime is 328381159. The reversal of 328381147 is 741183823.

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: 741183823 = 2647 ⋅280009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328381147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328381127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1522 + ... + 25672.

It is an arithmetic number, because the mean of its divisors is an integer number (82104724).

Almost surely, 2^328381147 is an apocalyptic number.

328381147 is a deficient number, since it is larger than the sum of its proper divisors (37749).

328381147 is a wasteful number, since it uses less digits than its factorization.

328381147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37748.

The product of its digits is 32256, while the sum is 37.

The square root of 328381147 is about 18121.2898823456. The cubic root of 328381147 is about 689.9104742771.

The spelling of 328381147 in words is "three hundred twenty-eight million, three hundred eighty-one thousand, one hundred forty-seven".