320347 has 4 divisors (see below), whose sum is σ = 321480. Its totient is φ = 319216.

The previous prime is 320339. The next prime is 320377. The reversal of 320347 is 743023.

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: 743023 = 47 ⋅15809.

It is a cyclic number.

It is not a de Polignac number, because 320347 - 2³ = 320339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320317) 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 3 ways as a sum of consecutive naturals, for example, 279 + ... + 847.

It is an arithmetic number, because the mean of its divisors is an integer number (80370).

2³²⁰³⁴⁷ is an apocalyptic number.

320347 is a deficient number, since it is larger than the sum of its proper divisors (1133).

320347 is an equidigital number, since it uses as much as digits as its factorization.

320347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 320347 is about 565.9920494141. The cubic root of 320347 is about 68.4237523382.

It can be divided in two parts, 32034 and 7, that added together give a square (32041 = 179²).

The spelling of 320347 in words is "three hundred twenty thousand, three hundred forty-seven", and thus it is an iban number.