513330823 has 4 divisors (see below), whose sum is σ = 513547200. Its totient is φ = 513114448.

The previous prime is 513330821. The next prime is 513330833. The reversal of 513330823 is 328033315.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 513330823 - 2¹ = 513330821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513330791 and 513330800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513330821) 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, 104590 + ... + 109387.

It is an arithmetic number, because the mean of its divisors is an integer number (128386800).

Almost surely, 2^513330823 is an apocalyptic number.

513330823 is a deficient number, since it is larger than the sum of its proper divisors (216377).

513330823 is a wasteful number, since it uses less digits than its factorization.

513330823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216376.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 513330823 is about 22656.8052249208. The cubic root of 513330823 is about 800.6925372963.

The spelling of 513330823 in words is "five hundred thirteen million, three hundred thirty thousand, eight hundred twenty-three".