2688231 has 32 divisors (see below), whose sum is σ = 4533760. Its totient is φ = 1378944.

The previous prime is 2688223. The next prime is 2688233. The reversal of 2688231 is 1328862.

It is not a de Polignac number, because 2688231 - 2³ = 2688223 is a prime.

It is a super-2 number, since 2×2688231² = 14453171818722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11625 + ... + 11853.

It is an arithmetic number, because the mean of its divisors is an integer number (141680).

2^2688231 is an apocalyptic number.

2688231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2688231 is a deficient number, since it is larger than the sum of its proper divisors (1845529).

2688231 is a wasteful number, since it uses less digits than its factorization.

2688231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295.

The product of its digits is 4608, while the sum is 30.

The square root of 2688231 is about 1639.5825688266. The cubic root of 2688231 is about 139.0450486286.

The spelling of 2688231 in words is "two million, six hundred eighty-eight thousand, two hundred thirty-one".