2311489 has 4 divisors (see below), whose sum is σ = 2355156. Its totient is φ = 2267824.

The previous prime is 2311487. The next prime is 2311493. The reversal of 2311489 is 9841132.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1710864 + 600625 = 1308^2 + 775^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311489 - 2¹ = 2311487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311487) 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, 21754 + ... + 21859.

It is an arithmetic number, because the mean of its divisors is an integer number (588789).

2^2311489 is an apocalyptic number.

It is an amenable number.

2311489 is a deficient number, since it is larger than the sum of its proper divisors (43667).

2311489 is an equidigital number, since it uses as much as digits as its factorization.

2311489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43666.

The product of its digits is 1728, while the sum is 28.

The square root of 2311489 is about 1520.3581814822. The cubic root of 2311489 is about 132.2200378091.

The spelling of 2311489 in words is "two million, three hundred eleven thousand, four hundred eighty-nine".