320330145 has 32 divisors (see below), whose sum is σ = 533371392. Its totient is φ = 164033792.

The previous prime is 320330141. The next prime is 320330159. The reversal of 320330145 is 541033023.

It is a cyclic number.

It is not a de Polignac number, because 320330145 - 2² = 320330141 is a prime.

It is a super-2 number, since 2×320330145² = 205222803591442050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320330141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33079 + ... + 41651.

It is an arithmetic number, because the mean of its divisors is an integer number (16667856).

Almost surely, 2^320330145 is an apocalyptic number.

It is an amenable number.

320330145 is a deficient number, since it is larger than the sum of its proper divisors (213041247).

320330145 is a wasteful number, since it uses less digits than its factorization.

320330145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8681.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 320330145 is about 17897.7692744096. The cubic root of 320330145 is about 684.2255228266.

Adding to 320330145 its reverse (541033023), we get a palindrome (861363168).

The spelling of 320330145 in words is "three hundred twenty million, three hundred thirty thousand, one hundred forty-five".