511523323 has 2 divisors, whose sum is σ = 511523324. Its totient is φ = 511523322.

The previous prime is 511523321. The next prime is 511523329. The reversal of 511523323 is 323325115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 511523323 - 2¹ = 511523321 is a prime.

It is a super-2 number, since 2×511523323² = 523312219945924658, which contains 22 as substring.

Together with 511523321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (511523321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255761661 + 255761662.

It is an arithmetic number, because the mean of its divisors is an integer number (255761662).

Almost surely, 2^511523323 is an apocalyptic number.

511523323 is a deficient number, since it is larger than the sum of its proper divisors (1).

511523323 is an equidigital number, since it uses as much as digits as its factorization.

511523323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 25.

The square root of 511523323 is about 22616.8813721079. The cubic root of 511523323 is about 799.7516536423.

Adding to 511523323 its reverse (323325115), we get a palindrome (834848438).

The spelling of 511523323 in words is "five hundred eleven million, five hundred twenty-three thousand, three hundred twenty-three".