2312289 has 36 divisors (see below), whose sum is σ = 4086784. Its totient is φ = 1233792.

The previous prime is 2312267. The next prime is 2312293. The reversal of 2312289 is 9822132.

It is a happy number.

It is not a de Polignac number, because 2312289 - 2¹¹ = 2310241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312209) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18144 + ... + 18270.

2^2312289 is an apocalyptic number.

It is an amenable number.

2312289 is a deficient number, since it is larger than the sum of its proper divisors (1774495).

2312289 is a wasteful number, since it uses less digits than its factorization.

2312289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 154 counting only the distinct ones).

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

The square root of 2312289 is about 1520.6212546193. The cubic root of 2312289 is about 132.2352897138.

It can be divided in two parts, 2312 and 289, that added together give a square (2601 = 51²).

The spelling of 2312289 in words is "two million, three hundred twelve thousand, two hundred eighty-nine".