320471 has 2 divisors, whose sum is σ = 320472. Its totient is φ = 320470.

The previous prime is 320449. The next prime is 320477. The reversal of 320471 is 174023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320471 is a prime.

It is a super-3 number, since 3×320471³ = 98738712815541333, which contains 333 as substring.

It is a Sophie Germain prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160235 + 160236.

It is an arithmetic number, because the mean of its divisors is an integer number (160236).

2³²⁰⁴⁷¹ is an apocalyptic number.

320471 is a deficient number, since it is larger than the sum of its proper divisors (1).

320471 is an equidigital number, since it uses as much as digits as its factorization.

320471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 320471 is about 566.1015809905. The cubic root of 320471 is about 68.4325796939.

Adding to 320471 its reverse (174023), we get a palindrome (494494).

The spelling of 320471 in words is "three hundred twenty thousand, four hundred seventy-one", and thus it is an iban number.