513020323 has 2 divisors, whose sum is σ = 513020324. Its totient is φ = 513020322.

The previous prime is 513020303. The next prime is 513020327. The reversal of 513020323 is 323020315.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513020323 is a prime.

It is a super-2 number, since 2×513020323² = 526379703622048658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 513020323.

It is not a weakly prime, because it can be changed into another prime (513020327) 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 as a sum of consecutive naturals, namely, 256510161 + 256510162.

It is an arithmetic number, because the mean of its divisors is an integer number (256510162).

Almost surely, 2^513020323 is an apocalyptic number.

513020323 is a deficient number, since it is larger than the sum of its proper divisors (1).

513020323 is an equidigital number, since it uses as much as digits as its factorization.

513020323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 513020323 is about 22649.9519425539. The cubic root of 513020323 is about 800.5310656128.

Adding to 513020323 its reverse (323020315), we get a palindrome (836040638).

The spelling of 513020323 in words is "five hundred thirteen million, twenty thousand, three hundred twenty-three".