513022123 has 2 divisors, whose sum is σ = 513022124. Its totient is φ = 513022122.

The previous prime is 513022109. The next prime is 513022171. The reversal of 513022123 is 321220315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513022123 - 2¹³ = 513013931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513022123.

It is not a weakly prime, because it can be changed into another prime (513022183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256511061 + 256511062.

It is an arithmetic number, because the mean of its divisors is an integer number (256511062).

Almost surely, 2^513022123 is an apocalyptic number.

513022123 is a deficient number, since it is larger than the sum of its proper divisors (1).

513022123 is an equidigital number, since it uses as much as digits as its factorization.

513022123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 513022123 is about 22649.9916777027. The cubic root of 513022123 is about 800.5320018683.

Adding to 513022123 its reverse (321220315), we get a palindrome (834242438).

The spelling of 513022123 in words is "five hundred thirteen million, twenty-two thousand, one hundred twenty-three".