328863173 has 4 divisors (see below), whose sum is σ = 336884268. Its totient is φ = 320842080.

The previous prime is 328863167. The next prime is 328863179. The reversal of 328863173 is 371368823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 371368823 = 7 ⋅53052689.

It is an interprime number because it is at equal distance from previous prime (328863167) and next prime (328863179).

It can be written as a sum of positive squares in 2 ways, for example, as 128300929 + 200562244 = 11327^2 + 14162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328863173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 8021053 = 328863173 / (3 + 2 + 8 + 8 + 6 + 3 + 1 + 7 + 3).

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 328863173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328863179) 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, 4010486 + ... + 4010567.

It is an arithmetic number, because the mean of its divisors is an integer number (84221067).

Almost surely, 2^328863173 is an apocalyptic number.

It is an amenable number.

328863173 is a deficient number, since it is larger than the sum of its proper divisors (8021095).

328863173 is an equidigital number, since it uses as much as digits as its factorization.

328863173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8021094.

The product of its digits is 145152, while the sum is 41.

The square root of 328863173 is about 18134.5849966301. The cubic root of 328863173 is about 690.2478791539.

The spelling of 328863173 in words is "three hundred twenty-eight million, eight hundred sixty-three thousand, one hundred seventy-three".