13331518331 has 8 divisors (see below), whose sum is σ = 13469286864. Its totient is φ = 13193863200.

The previous prime is 13331518327. The next prime is 13331518339. The reversal of 13331518331 is 13381513331.

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

It is a cyclic number.

It is not a de Polignac number, because 13331518331 - 2² = 13331518327 is a prime.

It is a super-2 number, since 2×13331518331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13331518339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219056 + ... + 273218.

It is an arithmetic number, because the mean of its divisors is an integer number (1683660858).

Almost surely, 2^13331518331 is an apocalyptic number.

13331518331 is a deficient number, since it is larger than the sum of its proper divisors (137768533).

13331518331 is a wasteful number, since it uses less digits than its factorization.

13331518331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56701.

The product of its digits is 9720, while the sum is 32.

Subtracting 13331518331 from its reverse (13381513331), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 13331518331 in words is "thirteen billion, three hundred thirty-one million, five hundred eighteen thousand, three hundred thirty-one".