320369 has 4 divisors (see below), whose sum is σ = 366144. Its totient is φ = 274596.

The previous prime is 320339. The next prime is 320377. The reversal of 320369 is 963023.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 963023 = 613 ⋅1571.

It is not a de Polignac number, because 320369 - 2⁸ = 320113 is a prime.

It is a super-2 number, since 2×320369² = 205272592322, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320369.

It is not an unprimeable number, because it can be changed into a prime (320329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22877 + ... + 22890.

It is an arithmetic number, because the mean of its divisors is an integer number (91536).

2³²⁰³⁶⁹ is an apocalyptic number.

It is an amenable number.

320369 is a deficient number, since it is larger than the sum of its proper divisors (45775).

320369 is an equidigital number, since it uses as much as digits as its factorization.

320369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45774.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 320369 is about 566.0114839824. The cubic root of 320369 is about 68.4253186482.

The spelling of 320369 in words is "three hundred twenty thousand, three hundred sixty-nine".