518241023 has 4 divisors (see below), whose sum is σ = 519106800. Its totient is φ = 517375248.

The previous prime is 518241019. The next prime is 518241077. The reversal of 518241023 is 320142815.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320142815 = 5 ⋅64028563.

It is a cyclic number.

It is not a de Polignac number, because 518241023 - 2² = 518241019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 518240983 and 518241001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518241013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431990 + ... + 433187.

It is an arithmetic number, because the mean of its divisors is an integer number (129776700).

Almost surely, 2^518241023 is an apocalyptic number.

518241023 is a deficient number, since it is larger than the sum of its proper divisors (865777).

518241023 is an equidigital number, since it uses as much as digits as its factorization.

518241023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865776.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 518241023 is about 22764.9077090156. The cubic root of 518241023 is about 803.2374140778.

Adding to 518241023 its reverse (320142815), we get a palindrome (838383838).

The spelling of 518241023 in words is "five hundred eighteen million, two hundred forty-one thousand, twenty-three".