2431489 has 2 divisors, whose sum is σ = 2431490. Its totient is φ = 2431488.

The previous prime is 2431469. The next prime is 2431501. The reversal of 2431489 is 9841342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2265025 + 166464 = 1505^2 + 408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2431489 is a prime.

2431489 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2431489.

It is not a weakly prime, because it can be changed into another prime (2431409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1215744 + 1215745.

It is an arithmetic number, because the mean of its divisors is an integer number (1215745).

2^2431489 is an apocalyptic number.

It is an amenable number.

2431489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2431489 is an equidigital number, since it uses as much as digits as its factorization.

2431489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 2431489 is about 1559.3232506443. The cubic root of 2431489 is about 134.4695969201.

It can be divided in two parts, 24 and 31489, that added together give a palindrome (31513).

The spelling of 2431489 in words is "two million, four hundred thirty-one thousand, four hundred eighty-nine".