513106423 has 2 divisors, whose sum is σ = 513106424. Its totient is φ = 513106422.

The previous prime is 513106403. The next prime is 513106459. The reversal of 513106423 is 324601315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513106423 - 2⁹ = 513105911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513106403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256553211 + 256553212.

It is an arithmetic number, because the mean of its divisors is an integer number (256553212).

Almost surely, 2^513106423 is an apocalyptic number.

513106423 is a deficient number, since it is larger than the sum of its proper divisors (1).

513106423 is an equidigital number, since it uses as much as digits as its factorization.

513106423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 513106423 is about 22651.8525290979. The cubic root of 513106423 is about 800.5758473795.

Adding to 513106423 its reverse (324601315), we get a palindrome (837707738).

The spelling of 513106423 in words is "five hundred thirteen million, one hundred six thousand, four hundred twenty-three".