2688031 has 4 divisors (see below), whose sum is σ = 2703064. Its totient is φ = 2673000.

The previous prime is 2688019. The next prime is 2688053. The reversal of 2688031 is 1308862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2688031 - 2⁵ = 2687999 is a prime.

It is a super-2 number, since 2×2688031² = 14451021313922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7245 + ... + 7606.

It is an arithmetic number, because the mean of its divisors is an integer number (675766).

2^2688031 is an apocalyptic number.

2688031 is a deficient number, since it is larger than the sum of its proper divisors (15033).

2688031 is a wasteful number, since it uses less digits than its factorization.

2688031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15032.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2688031 is about 1639.5215765582. The cubic root of 2688031 is about 139.0416003015.

The spelling of 2688031 in words is "two million, six hundred eighty-eight thousand, thirty-one".