321327145 has 16 divisors (see below), whose sum is σ = 409098240. Its totient is φ = 241605504.

The previous prime is 321327133. The next prime is 321327151. The reversal of 321327145 is 541723123.

It is a cyclic number.

It is not a de Polignac number, because 321327145 - 2¹¹ = 321325097 is a prime.

It is a super-2 number, since 2×321327145² = 206502268227702050, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1252 + ... + 25381.

It is an arithmetic number, because the mean of its divisors is an integer number (25568640).

Almost surely, 2^321327145 is an apocalyptic number.

It is an amenable number.

321327145 is a deficient number, since it is larger than the sum of its proper divisors (87771095).

321327145 is a wasteful number, since it uses less digits than its factorization.

321327145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26784.

The product of its digits is 5040, while the sum is 28.

The square root of 321327145 is about 17925.6002688892. The cubic root of 321327145 is about 684.9346519791.

The spelling of 321327145 in words is "three hundred twenty-one million, three hundred twenty-seven thousand, one hundred forty-five".