321097 has 6 divisors (see below), whose sum is σ = 373578. Its totient is φ = 275184.

The previous prime is 321091. The next prime is 321109. The reversal of 321097 is 790123.

It can be written as a sum of positive squares in only one way, i.e., 254016 + 67081 = 504^2 + 259^2 .

It is not a de Polignac number, because 321097 - 2¹¹ = 319049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3228 + ... + 3325.

It is an arithmetic number, because the mean of its divisors is an integer number (62263).

2³²¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

321097 is a deficient number, since it is larger than the sum of its proper divisors (52481).

321097 is an equidigital number, since it uses as much as digits as its factorization.

321097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6567 (or 6560 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 321097 is about 566.6542155495. The cubic root of 321097 is about 68.4771088731.

The spelling of 321097 in words is "three hundred twenty-one thousand, ninety-seven".