323020145 has 16 divisors (see below), whose sum is σ = 469058688. Its totient is φ = 208469760.

The previous prime is 323020141. The next prime is 323020153. The reversal of 323020145 is 541020323.

It is a happy number.

It is not a de Polignac number, because 323020145 - 2² = 323020141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (323020141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270851 + ... + 272040.

It is an arithmetic number, because the mean of its divisors is an integer number (29316168).

Almost surely, 2^323020145 is an apocalyptic number.

323020145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

323020145 is a deficient number, since it is larger than the sum of its proper divisors (146038543).

323020145 is a wasteful number, since it uses less digits than its factorization.

323020145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542920.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 323020145 is about 17972.7611957651. The cubic root of 323020145 is about 686.1354673863.

Adding to 323020145 its reverse (541020323), we get a palindrome (864040468).

The spelling of 323020145 in words is "three hundred twenty-three million, twenty thousand, one hundred forty-five".