13111202331 has 12 divisors (see below), whose sum is σ = 18939486280. Its totient is φ = 8740301760.

The previous prime is 13111202327. The next prime is 13111202333. The reversal of 13111202331 is 13320211131.

13111202331 is a `hidden beast` number, since 1 + 311 + 1 + 20 + 2 + 331 = 666.

13111202331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13111202331 - 2² = 13111202327 is a prime.

It is a super-2 number, since 2×13111202331² (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 (13111202333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195651 + ... + 253971.

Almost surely, 2^13111202331 is an apocalyptic number.

13111202331 is a deficient number, since it is larger than the sum of its proper divisors (5828283949).

13111202331 is a wasteful number, since it uses less digits than its factorization.

13111202331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83306 (or 83303 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13111202331 its reverse (13320211131), we get a palindrome (26431413462).

The spelling of 13111202331 in words is "thirteen billion, one hundred eleven million, two hundred two thousand, three hundred thirty-one".