513223613 has 16 divisors (see below), whose sum is σ = 590947200. Its totient is φ = 436617216.

The previous prime is 513223589. The next prime is 513223621. The reversal of 513223613 is 316322315.

It is not a de Polignac number, because 513223613 - 2⁶ = 513223549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513223663) 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 in 15 ways as a sum of consecutive naturals, for example, 889181 + ... + 889757.

It is an arithmetic number, because the mean of its divisors is an integer number (36934200).

Almost surely, 2^513223613 is an apocalyptic number.

It is an amenable number.

513223613 is a deficient number, since it is larger than the sum of its proper divisors (77723587).

513223613 is a wasteful number, since it uses less digits than its factorization.

513223613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its digits is 3240, while the sum is 26.

The square root of 513223613 is about 22654.4391455626. The cubic root of 513223613 is about 800.6367914239.

Adding to 513223613 its reverse (316322315), we get a palindrome (829545928).

The spelling of 513223613 in words is "five hundred thirteen million, two hundred twenty-three thousand, six hundred thirteen".