11103131331 has 6 divisors (see below), whose sum is σ = 16037856380. Its totient is φ = 7402087548.

The previous prime is 11103131311. The next prime is 11103131387. The reversal of 11103131331 is 13313130111.

11103131331 is a `hidden beast` number, since 11 + 10 + 313 + 1 + 331 = 666.

11103131331 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 11103131331 - 2⁶ = 11103131267 is a prime.

It is a super-2 number, since 2×11103131331² (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 (11103131311) 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 5 ways as a sum of consecutive naturals, for example, 616840621 + ... + 616840638.

Almost surely, 2^11103131331 is an apocalyptic number.

11103131331 is a deficient number, since it is larger than the sum of its proper divisors (4934725049).

11103131331 is a wasteful number, since it uses less digits than its factorization.

11103131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233681265 (or 1233681262 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 11103131331 its reverse (13313130111), we get a palindrome (24416261442).

The spelling of 11103131331 in words is "eleven billion, one hundred three million, one hundred thirty-one thousand, three hundred thirty-one".