323720325 has 36 divisors (see below), whose sum is σ = 587791620. Its totient is φ = 170277120.

The previous prime is 323720303. The next prime is 323720329. The reversal of 323720325 is 523027323.

It can be written as a sum of positive squares in 6 ways, for example, as 3381921 + 320338404 = 1839^2 + 17898^2 .

It is not a de Polignac number, because 323720325 - 2¹³ = 323712133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323720329) 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 35 ways as a sum of consecutive naturals, for example, 6571 + ... + 26279.

It is an arithmetic number, because the mean of its divisors is an integer number (16327545).

Almost surely, 2^323720325 is an apocalyptic number.

It is an amenable number.

323720325 is a deficient number, since it is larger than the sum of its proper divisors (264071295).

323720325 is a wasteful number, since it uses less digits than its factorization.

323720325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19798 (or 19790 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 323720325 is about 17992.2295727906. The cubic root of 323720325 is about 686.6308664477.

Adding to 323720325 its reverse (523027323), we get a palindrome (846747648).

The spelling of 323720325 in words is "three hundred twenty-three million, seven hundred twenty thousand, three hundred twenty-five".