320437 has 6 divisors (see below), whose sum is σ = 347298. Its totient is φ = 293904.

The previous prime is 320431. The next prime is 320449. The reversal of 320437 is 734023.

320437 is nontrivially palindromic in base 12.

It can be written as a sum of positive squares in 3 ways, for example, as 81 + 320356 = 9^2 + 566^2 .

It is not a de Polignac number, because 320437 - 2¹⁵ = 287669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320431) 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 5 ways as a sum of consecutive naturals, for example, 1963 + ... + 2119.

It is an arithmetic number, because the mean of its divisors is an integer number (57883).

2³²⁰⁴³⁷ is an apocalyptic number.

It is an amenable number.

320437 is a deficient number, since it is larger than the sum of its proper divisors (26861).

320437 is an equidigital number, since it uses as much as digits as its factorization.

320437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 170 counting only the distinct ones).

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

The square root of 320437 is about 566.0715502478. The cubic root of 320437 is about 68.4301595166.

It can be divided in two parts, 320 and 437, that added together give a palindrome (757).

The spelling of 320437 in words is "three hundred twenty thousand, four hundred thirty-seven".