513113303 has 2 divisors, whose sum is σ = 513113304. Its totient is φ = 513113302.

The previous prime is 513113207. The next prime is 513113311. The reversal of 513113303 is 303311315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513113303 - 2¹⁶ = 513047767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513113323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256556651 + 256556652.

It is an arithmetic number, because the mean of its divisors is an integer number (256556652).

Almost surely, 2^513113303 is an apocalyptic number.

513113303 is a deficient number, since it is larger than the sum of its proper divisors (1).

513113303 is an equidigital number, since it uses as much as digits as its factorization.

513113303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405, while the sum is 20.

The square root of 513113303 is about 22652.0043925477. The cubic root of 513113303 is about 800.5794255437.

Adding to 513113303 its reverse (303311315), we get a palindrome (816424618).

The spelling of 513113303 in words is "five hundred thirteen million, one hundred thirteen thousand, three hundred three".