328071913 has 8 divisors (see below), whose sum is σ = 353912328. Its totient is φ = 302317824.

The previous prime is 328071907. The next prime is 328071929. The reversal of 328071913 is 319170823.

It can be written as a sum of positive squares in 4 ways, for example, as 102981904 + 225090009 = 10148^2 + 15003^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328071913 - 2⁵ = 328071881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328071973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13570 + ... + 28987.

It is an arithmetic number, because the mean of its divisors is an integer number (44239041).

Almost surely, 2^328071913 is an apocalyptic number.

It is an amenable number.

328071913 is a deficient number, since it is larger than the sum of its proper divisors (25840415).

328071913 is a wasteful number, since it uses less digits than its factorization.

328071913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43163.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 328071913 is about 18112.7555330491. The cubic root of 328071913 is about 689.6938451347.

The spelling of 328071913 in words is "three hundred twenty-eight million, seventy-one thousand, nine hundred thirteen".