2081361 has 16 divisors (see below), whose sum is σ = 3020544. Its totient is φ = 1269504.

The previous prime is 2081353. The next prime is 2081369. The reversal of 2081361 is 1631802.

It is an interprime number because it is at equal distance from previous prime (2081353) and next prime (2081369).

It is not a de Polignac number, because 2081361 - 2³ = 2081353 is a prime.

It is a super-2 number, since 2×2081361² = 8664127224642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2081369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1336 + ... + 2438.

It is an arithmetic number, because the mean of its divisors is an integer number (188784).

2^2081361 is an apocalyptic number.

It is an amenable number.

2081361 is a deficient number, since it is larger than the sum of its proper divisors (939183).

2081361 is a wasteful number, since it uses less digits than its factorization.

2081361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 2081361 is about 1442.6922748805. The cubic root of 2081361 is about 127.6779215362.

It can be divided in two parts, 2081 and 361, that added together give a palindrome (2442).

The spelling of 2081361 in words is "two million, eighty-one thousand, three hundred sixty-one".