321107 has 4 divisors (see below), whose sum is σ = 324216. Its totient is φ = 318000.

The previous prime is 321091. The next prime is 321109. The reversal of 321107 is 701123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701123 = 197 ⋅3559.

It is a cyclic number.

It is not a de Polignac number, because 321107 - 2⁴ = 321091 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 321091 and 321100.

It is not an unprimeable number, because it can be changed into a prime (321109) 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, 1394 + ... + 1607.

It is an arithmetic number, because the mean of its divisors is an integer number (81054).

2³²¹¹⁰⁷ is an apocalyptic number.

321107 is a deficient number, since it is larger than the sum of its proper divisors (3109).

321107 is a wasteful number, since it uses less digits than its factorization.

321107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 321107 is about 566.6630392041. The cubic root of 321107 is about 68.4778197320.

The spelling of 321107 in words is "three hundred twenty-one thousand, one hundred seven", and thus it is an iban number.