328313 has 4 divisors (see below), whose sum is σ = 329460. Its totient is φ = 327168.

The previous prime is 328303. The next prime is 328327. The reversal of 328313 is 313823.

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.

It can be written as a sum of positive squares in 2 ways, for example, as 218089 + 110224 = 467^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 328313 - 2⁶ = 328249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328303) 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, 281 + ... + 857.

It is an arithmetic number, because the mean of its divisors is an integer number (82365).

2³²⁸³¹³ is an apocalyptic number.

It is an amenable number.

328313 is a deficient number, since it is larger than the sum of its proper divisors (1147).

328313 is an equidigital number, since it uses as much as digits as its factorization.

328313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its digits is 432, while the sum is 20.

The square root of 328313 is about 572.9860382243. The cubic root of 328313 is about 68.9862746627.

The spelling of 328313 in words is "three hundred twenty-eight thousand, three hundred thirteen".