11315316538 has 8 divisors (see below), whose sum is σ = 16973771220. Its totient is φ = 5657392800.

The previous prime is 11315316517. The next prime is 11315316539. The reversal of 11315316538 is 83561351311.

It can be written as a sum of positive squares in 2 ways, for example, as 10652923369 + 662393169 = 103213^2 + 25737^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11315316497 and 11315316506.

It is not an unprimeable number, because it can be changed into a prime (11315316539) 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, 74313 + ... + 167788.

Almost surely, 2^11315316538 is an apocalyptic number.

11315316538 is a deficient number, since it is larger than the sum of its proper divisors (5658454682).

11315316538 is a wasteful number, since it uses less digits than its factorization.

11315316538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265472.

The product of its digits is 32400, while the sum is 37.

Adding to 11315316538 its reverse (83561351311), we get a palindrome (94876667849).

The spelling of 11315316538 in words is "eleven billion, three hundred fifteen million, three hundred sixteen thousand, five hundred thirty-eight".