2431889 has 4 divisors (see below), whose sum is σ = 2436720. Its totient is φ = 2427060.

The previous prime is 2431879. The next prime is 2431909. The reversal of 2431889 is 9881342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9881342 = 2 ⋅4940671.

It is a cyclic number.

It is not a de Polignac number, because 2431889 - 2⁸ = 2431633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2431879) 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, 1559 + ... + 2700.

It is an arithmetic number, because the mean of its divisors is an integer number (609180).

2^2431889 is an apocalyptic number.

It is an amenable number.

2431889 is a deficient number, since it is larger than the sum of its proper divisors (4831).

2431889 is an equidigital number, since it uses as much as digits as its factorization.

2431889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830.

The product of its digits is 13824, while the sum is 35.

The square root of 2431889 is about 1559.4515061393. The cubic root of 2431889 is about 134.4769703019.

It can be divided in two parts, 24 and 31889, that added together give a palindrome (31913).

The spelling of 2431889 in words is "two million, four hundred thirty-one thousand, eight hundred eighty-nine".