511323 has 4 divisors (see below), whose sum is σ = 681768. Its totient is φ = 340880.

The previous prime is 511297. The next prime is 511327. The reversal of 511323 is 323115.

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 511323 - 2¹⁰ = 510299 is a prime.

It is a super-2 number, since 2×511323² = 522902420658, which contains 22 as substring.

It is a D-number.

511323 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (511327) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 85218 + ... + 85223.

It is an arithmetic number, because the mean of its divisors is an integer number (170442).

2⁵¹¹³²³ is an apocalyptic number.

511323 is a deficient number, since it is larger than the sum of its proper divisors (170445).

511323 is a wasteful number, since it uses less digits than its factorization.

511323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170444.

The product of its digits is 90, while the sum is 15.

The square root of 511323 is about 715.0685281845. The cubic root of 511323 is about 79.9647240307.

Adding to 511323 its reverse (323115), we get a palindrome (834438).

The spelling of 511323 in words is "five hundred eleven thousand, three hundred twenty-three".