11331688 has 8 divisors (see below), whose sum is σ = 21246930. Its totient is φ = 5665840.

The previous prime is 11331679. The next prime is 11331689. The reversal of 11331688 is 88613311.

It can be written as a sum of positive squares in only one way, i.e., 5846724 + 5484964 = 2418^2 + 2342^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (11331689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708223 + ... + 708238.

Almost surely, 2^11331688 is an apocalyptic number.

It is an amenable number.

11331688 is a deficient number, since it is larger than the sum of its proper divisors (9915242).

11331688 is a wasteful number, since it uses less digits than its factorization.

11331688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416467 (or 1416463 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 11331688 is about 3366.2572688373. The cubic root of 11331688 is about 224.6112662178.

Adding to 11331688 its reverse (88613311), we get a palindrome (99944999).

The spelling of 11331688 in words is "eleven million, three hundred thirty-one thousand, six hundred eighty-eight".