2306881 has 2 divisors, whose sum is σ = 2306882. Its totient is φ = 2306880.

The previous prime is 2306867. The next prime is 2306893. The reversal of 2306881 is 1886032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2076481 + 230400 = 1441^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 2306881 - 2⁷ = 2306753 is a prime.

It is a super-2 number, since 2×2306881² = 10643399896322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2306851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1153440 + 1153441.

It is an arithmetic number, because the mean of its divisors is an integer number (1153441).

2^2306881 is an apocalyptic number.

It is an amenable number.

2306881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2306881 is an equidigital number, since it uses as much as digits as its factorization.

2306881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2306881 is about 1518.8419930987. The cubic root of 2306881 is about 132.1321182549.

The spelling of 2306881 in words is "two million, three hundred six thousand, eight hundred eighty-one".