11315316540 has 48 divisors (see below), whose sum is σ = 34563150720. Its totient is φ = 2743106880.

The previous prime is 11315316539. The next prime is 11315316581. The reversal of 11315316540 is 4561351311.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11315316498 and 11315316507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8571550 + ... + 8572869.

It is an arithmetic number, because the mean of its divisors is an integer number (720065640).

Almost surely, 2^11315316540 is an apocalyptic number.

11315316540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11315316540 is an abundant number, since it is smaller than the sum of its proper divisors (23247834180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11315316540 is a wasteful number, since it uses less digits than its factorization.

11315316540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17144442 (or 17144440 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

Adding to 11315316540 its reverse (4561351311), we get a palindrome (15876667851).

The spelling of 11315316540 in words is "eleven billion, three hundred fifteen million, three hundred sixteen thousand, five hundred forty".