513103323 has 4 divisors (see below), whose sum is σ = 684137768. Its totient is φ = 342068880.

The previous prime is 513103319. The next prime is 513103373. The reversal of 513103323 is 323301315.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 513103323 - 2² = 513103319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513103323.

It is not an unprimeable number, because it can be changed into a prime (513103373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85517218 + ... + 85517223.

It is an arithmetic number, because the mean of its divisors is an integer number (171034442).

Almost surely, 2^513103323 is an apocalyptic number.

513103323 is a deficient number, since it is larger than the sum of its proper divisors (171034445).

513103323 is a wasteful number, since it uses less digits than its factorization.

513103323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171034444.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 513103323 is about 22651.7841019201. The cubic root of 513103323 is about 800.5742351148.

Adding to 513103323 its reverse (323301315), we get a palindrome (836404638).

The spelling of 513103323 in words is "five hundred thirteen million, one hundred three thousand, three hundred twenty-three".