323870513 has 2 divisors, whose sum is σ = 323870514. Its totient is φ = 323870512.

The previous prime is 323870507. The next prime is 323870537. The reversal of 323870513 is 315078323.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270536704 + 53333809 = 16448^2 + 7303^2 .

It is a cyclic number.

It is not a de Polignac number, because 323870513 - 2⁴ = 323870497 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 323870513.

It is not a weakly prime, because it can be changed into another prime (323870593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161935256 + 161935257.

It is an arithmetic number, because the mean of its divisors is an integer number (161935257).

Almost surely, 2^323870513 is an apocalyptic number.

It is an amenable number.

323870513 is a deficient number, since it is larger than the sum of its proper divisors (1).

323870513 is an equidigital number, since it uses as much as digits as its factorization.

323870513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 323870513 is about 17996.4027794446. The cubic root of 323870513 is about 686.7370360482.

The spelling of 323870513 in words is "three hundred twenty-three million, eight hundred seventy thousand, five hundred thirteen".