513600123 has 8 divisors (see below), whose sum is σ = 689002048. Its totient is φ = 340299144.

The previous prime is 513600089. The next prime is 513600137. The reversal of 513600123 is 321006315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 513600123 - 2¹⁴ = 513583739 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513600123.

It is not an unprimeable number, because it can be changed into a prime (513600163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524665 + ... + 525642.

It is an arithmetic number, because the mean of its divisors is an integer number (86125256).

Almost surely, 2^513600123 is an apocalyptic number.

513600123 is a deficient number, since it is larger than the sum of its proper divisors (175401925).

513600123 is a wasteful number, since it uses less digits than its factorization.

513600123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050473.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 513600123 is about 22662.7474724491. The cubic root of 513600123 is about 800.8325307111.

Adding to 513600123 its reverse (321006315), we get a palindrome (834606438).

The spelling of 513600123 in words is "five hundred thirteen million, six hundred thousand, one hundred twenty-three".