11531476338 has 8 divisors (see below), whose sum is σ = 23062952688. Its totient is φ = 3843825444.

The previous prime is 11531476321. The next prime is 11531476357. The reversal of 11531476338 is 83367413511.

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

11531476338 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 11531476338.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 960956356 + ... + 960956367.

It is an arithmetic number, because the mean of its divisors is an integer number (2882869086).

Almost surely, 2^11531476338 is an apocalyptic number.

11531476338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11531476338 is a wasteful number, since it uses less digits than its factorization.

11531476338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921912728.

The product of its digits is 181440, while the sum is 42.

Adding to 11531476338 its reverse (83367413511), we get a palindrome (94898889849).

The spelling of 11531476338 in words is "eleven billion, five hundred thirty-one million, four hundred seventy-six thousand, three hundred thirty-eight".