513311530 has 16 divisors (see below), whose sum is σ = 924257160. Its totient is φ = 205258752.

The previous prime is 513311509. The next prime is 513311551. The reversal of 513311530 is 35113315.

It is an interprime number because it is at equal distance from previous prime (513311509) and next prime (513311551).

It can be written as a sum of positive squares in 4 ways, for example, as 512252689 + 1058841 = 22633^2 + 1029^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 35626 + ... + 47914.

Almost surely, 2^513311530 is an apocalyptic number.

513311530 is a deficient number, since it is larger than the sum of its proper divisors (410945630).

513311530 is a wasteful number, since it uses less digits than its factorization.

513311530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16473.

The product of its (nonzero) digits is 675, while the sum is 22.

The square root of 513311530 is about 22656.3794548026. The cubic root of 513311530 is about 800.6825061078.

Adding to 513311530 its reverse (35113315), we get a palindrome (548424845).

The spelling of 513311530 in words is "five hundred thirteen million, three hundred eleven thousand, five hundred thirty".