513335423 has 2 divisors, whose sum is σ = 513335424. Its totient is φ = 513335422.

The previous prime is 513335401. The next prime is 513335477. The reversal of 513335423 is 324533315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513335423 - 2⁸ = 513335167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513365423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256667711 + 256667712.

It is an arithmetic number, because the mean of its divisors is an integer number (256667712).

Almost surely, 2^513335423 is an apocalyptic number.

513335423 is a deficient number, since it is larger than the sum of its proper divisors (1).

513335423 is an equidigital number, since it uses as much as digits as its factorization.

513335423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 29.

The square root of 513335423 is about 22656.9067394470. The cubic root of 513335423 is about 800.6949289798.

Adding to 513335423 its reverse (324533315), we get a palindrome (837868738).

The spelling of 513335423 in words is "five hundred thirteen million, three hundred thirty-five thousand, four hundred twenty-three".