2113081 has 4 divisors (see below), whose sum is σ = 2120272. Its totient is φ = 2105892.

The previous prime is 2113043. The next prime is 2113087. The reversal of 2113081 is 1803112.

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 2113081 - 2⁷ = 2112953 is a prime.

It is a super-2 number, since 2×2113081² = 8930222625122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113087) 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, 3135 + ... + 3748.

It is an arithmetic number, because the mean of its divisors is an integer number (530068).

2^2113081 is an apocalyptic number.

It is an amenable number.

2113081 is a deficient number, since it is larger than the sum of its proper divisors (7191).

2113081 is an equidigital number, since it uses as much as digits as its factorization.

2113081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2113081 is about 1453.6440417103. The cubic root of 2113081 is about 128.3232592681.

Adding to 2113081 its reverse (1803112), we get a palindrome (3916193).

The spelling of 2113081 in words is "two million, one hundred thirteen thousand, eighty-one".