2311243 has 4 divisors (see below), whose sum is σ = 2521368. Its totient is φ = 2101120.

The previous prime is 2311237. The next prime is 2311249. The reversal of 2311243 is 3421132.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2311237) and next prime (2311249).

It is a cyclic number.

It is not a de Polignac number, because 2311243 - 2⁹ = 2310731 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2311249) 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, 105046 + ... + 105067.

It is an arithmetic number, because the mean of its divisors is an integer number (630342).

2^2311243 is an apocalyptic number.

2311243 is a deficient number, since it is larger than the sum of its proper divisors (210125).

2311243 is a wasteful number, since it uses less digits than its factorization.

2311243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210124.

The product of its digits is 144, while the sum is 16.

The square root of 2311243 is about 1520.2772773412. The cubic root of 2311243 is about 132.2153471410.

Adding to 2311243 its reverse (3421132), we get a palindrome (5732375).

The spelling of 2311243 in words is "two million, three hundred eleven thousand, two hundred forty-three".