3111688 has 8 divisors (see below), whose sum is σ = 5834430. Its totient is φ = 1555840.

The previous prime is 3111679. The next prime is 3111721. The reversal of 3111688 is 8861113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2883204 + 228484 = 1698^2 + 478^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194473 + ... + 194488.

Almost surely, 2^3111688 is an apocalyptic number.

It is an amenable number.

3111688 is a deficient number, since it is larger than the sum of its proper divisors (2722742).

3111688 is a wasteful number, since it uses less digits than its factorization.

3111688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388967 (or 388963 counting only the distinct ones).

The product of its digits is 1152, while the sum is 28.

The square root of 3111688 is about 1763.9977324248. The cubic root of 3111688 is about 145.9929939717.

The spelling of 3111688 in words is "three million, one hundred eleven thousand, six hundred eighty-eight".