2381081 has 2 divisors, whose sum is σ = 2381082. Its totient is φ = 2381080.

The previous prime is 2381077. The next prime is 2381083. The reversal of 2381081 is 1801832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2374681 + 6400 = 1541^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 2381081 - 2² = 2381077 is a prime.

It is a super-2 number, since 2×2381081² = 11339093457122, which contains 22 as substring.

Together with 2381083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2381083) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1190540 + 1190541.

It is an arithmetic number, because the mean of its divisors is an integer number (1190541).

2^2381081 is an apocalyptic number.

It is an amenable number.

2381081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381081 is an equidigital number, since it uses as much as digits as its factorization.

2381081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2381081 is about 1543.0751763929. The cubic root of 2381081 is about 133.5338559179.

The spelling of 2381081 in words is "two million, three hundred eighty-one thousand, eighty-one".