2481309 has 12 divisors (see below), whose sum is σ = 3740256. Its totient is φ = 1582152.

The previous prime is 2481307. The next prime is 2481317. The reversal of 2481309 is 9031842.

It is not a de Polignac number, because 2481309 - 2¹ = 2481307 is a prime.

It is a Curzon number.

2481309 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2481307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5787 + ... + 6200.

It is an arithmetic number, because the mean of its divisors is an integer number (311688).

2^2481309 is an apocalyptic number.

It is an amenable number.

2481309 is a deficient number, since it is larger than the sum of its proper divisors (1258947).

2481309 is a wasteful number, since it uses less digits than its factorization.

2481309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016 (or 12013 counting only the distinct ones).

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

The square root of 2481309 is about 1575.2171278906. The cubic root of 2481309 is about 135.3817998544.

The spelling of 2481309 in words is "two million, four hundred eighty-one thousand, three hundred nine".