2306281 has 4 divisors (see below), whose sum is σ = 2312064. Its totient is φ = 2300500.

The previous prime is 2306267. The next prime is 2306299. The reversal of 2306281 is 1826032.

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.

It is a cyclic number.

It is not a de Polignac number, because 2306281 - 2⁷ = 2306153 is a prime.

It is a super-2 number, since 2×2306281² = 10637864101922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2306221) 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, 2245 + ... + 3106.

It is an arithmetic number, because the mean of its divisors is an integer number (578016).

2^2306281 is an apocalyptic number.

It is an amenable number.

2306281 is a deficient number, since it is larger than the sum of its proper divisors (5783).

2306281 is an equidigital number, since it uses as much as digits as its factorization.

2306281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5782.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2306281 is about 1518.6444613536. The cubic root of 2306281 is about 132.1206617840.

Subtracting from 2306281 its reverse (1826032), we obtain a square (480249 = 693²).

The spelling of 2306281 in words is "two million, three hundred six thousand, two hundred eighty-one".