2341981 has 2 divisors, whose sum is σ = 2341982. Its totient is φ = 2341980.

The previous prime is 2341979. The next prime is 2341987. The reversal of 2341981 is 1891432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1585081 + 756900 = 1259^2 + 870^2 .

It is a cyclic number.

It is not a de Polignac number, because 2341981 - 2¹ = 2341979 is a prime.

It is a super-2 number, since 2×2341981² = 10969750008722, which contains 22 as substring.

Together with 2341979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2341987) 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 as a sum of consecutive naturals, namely, 1170990 + 1170991.

It is an arithmetic number, because the mean of its divisors is an integer number (1170991).

2^2341981 is an apocalyptic number.

It is an amenable number.

2341981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2341981 is an equidigital number, since it uses as much as digits as its factorization.

2341981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 2341981 is about 1530.3532271995. The cubic root of 2341981 is about 132.7988933050.

The spelling of 2341981 in words is "two million, three hundred forty-one thousand, nine hundred eighty-one".