2340281 has 4 divisors (see below), whose sum is σ = 2344692. Its totient is φ = 2335872.

The previous prime is 2340277. The next prime is 2340313. The reversal of 2340281 is 1820432.

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 211600 + 2128681 = 460^2 + 1459^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340281 - 2² = 2340277 is a prime.

It is a super-2 number, since 2×2340281² = 10953830317922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2340241) 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 3 ways as a sum of consecutive naturals, for example, 1280 + ... + 2513.

It is an arithmetic number, because the mean of its divisors is an integer number (586173).

2^2340281 is an apocalyptic number.

It is an amenable number.

2340281 is a deficient number, since it is larger than the sum of its proper divisors (4411).

2340281 is an equidigital number, since it uses as much as digits as its factorization.

2340281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2340281 is about 1529.7976990439. The cubic root of 2340281 is about 132.7667534534.

It can be divided in two parts, 23 and 40281, that added together give a palindrome (40304).

The spelling of 2340281 in words is "two million, three hundred forty thousand, two hundred eighty-one".