320461 has 4 divisors (see below), whose sum is σ = 325312. Its totient is φ = 315612.

The previous prime is 320449. The next prime is 320471. The reversal of 320461 is 164023.

320461 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320461 - 2¹³ = 312269 is a prime.

It is a Duffinian number.

320461 is an undulating number in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320401) 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, 2325 + ... + 2458.

It is an arithmetic number, because the mean of its divisors is an integer number (81328).

2³²⁰⁴⁶¹ is an apocalyptic number.

It is an amenable number.

320461 is a deficient number, since it is larger than the sum of its proper divisors (4851).

320461 is an equidigital number, since it uses as much as digits as its factorization.

320461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4850.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320461 is about 566.0927485845. The cubic root of 320461 is about 68.4318678948.

Adding to 320461 its reverse (164023), we get a palindrome (484484).

The spelling of 320461 in words is "three hundred twenty thousand, four hundred sixty-one".