11431688 has 16 divisors (see below), whose sum is σ = 21511980. Its totient is φ = 5695168.

The previous prime is 11431657. The next prime is 11431709. The reversal of 11431688 is 88613411.

It is a happy number.

11431688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11142244 + 289444 = 3338^2 + 538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 4782.

Almost surely, 2^11431688 is an apocalyptic number.

It is an amenable number.

11431688 is a deficient number, since it is larger than the sum of its proper divisors (10080292).

11431688 is a wasteful number, since it uses less digits than its factorization.

11431688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5176 (or 5172 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 11431688 is about 3381.0779346238. The cubic root of 11431688 is about 225.2700494143.

The spelling of 11431688 in words is "eleven million, four hundred thirty-one thousand, six hundred eighty-eight".