320969 has 4 divisors (see below), whose sum is σ = 350160. Its totient is φ = 291780.

The previous prime is 320953. The next prime is 321007. The reversal of 320969 is 969023.

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: 969023 = 11 ⋅88093.

It is a cyclic number.

It is not a de Polignac number, because 320969 - 2⁴ = 320953 is a prime.

It is a super-2 number, since 2×320969² = 206042197922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320939) 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, 14579 + ... + 14600.

It is an arithmetic number, because the mean of its divisors is an integer number (87540).

2³²⁰⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

320969 is a deficient number, since it is larger than the sum of its proper divisors (29191).

320969 is a wasteful number, since it uses less digits than its factorization.

320969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29190.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 320969 is about 566.5412606333. The cubic root of 320969 is about 68.4680085754.

The spelling of 320969 in words is "three hundred twenty thousand, nine hundred sixty-nine".