320947 has 8 divisors (see below), whose sum is σ = 354240. Its totient is φ = 288360.

The previous prime is 320941. The next prime is 320953. The reversal of 320947 is 749023.

It is an interprime number because it is at equal distance from previous prime (320941) and next prime (320953).

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 320947 - 2³ = 320939 is a prime.

It is a Duffinian number.

320947 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (320941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704 + ... + 1882.

It is an arithmetic number, because the mean of its divisors is an integer number (44280).

2³²⁰⁹⁴⁷ is an apocalyptic number.

320947 is a deficient number, since it is larger than the sum of its proper divisors (33293).

320947 is a wasteful number, since it uses less digits than its factorization.

320947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 320947 is about 566.5218442390. The cubic root of 320947 is about 68.4664442181.

The spelling of 320947 in words is "three hundred twenty thousand, nine hundred forty-seven".