2289231 has 36 divisors (see below), whose sum is σ = 4001400. Its totient is φ = 1255968.

The previous prime is 2289211. The next prime is 2289233. The reversal of 2289231 is 1329822.

It is a happy number.

It is not a de Polignac number, because 2289231 - 2⁹ = 2288719 is a prime.

It is a super-2 number, since 2×2289231² = 10481157142722, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2289195 and 2289204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2289233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12700 + ... + 12878.

It is an arithmetic number, because the mean of its divisors is an integer number (111150).

2^2289231 is an apocalyptic number.

2289231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2289231 is a deficient number, since it is larger than the sum of its proper divisors (1712169).

2289231 is a wasteful number, since it uses less digits than its factorization.

2289231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 218 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2289231 is about 1513.0204889558. The cubic root of 2289231 is about 131.7942731978.

It can be divided in two parts, 22 and 89231, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 2289231 in words is "two million, two hundred eighty-nine thousand, two hundred thirty-one".