2113611 has 8 divisors (see below), whose sum is σ = 2909184. Its totient is φ = 1363560.

The previous prime is 2113609. The next prime is 2113651. The reversal of 2113611 is 1163112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2113611 - 2¹ = 2113609 is a prime.

It is an Ulam number.

2113611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2113651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11271 + ... + 11456.

It is an arithmetic number, because the mean of its divisors is an integer number (363648).

2^2113611 is an apocalyptic number.

2113611 is a deficient number, since it is larger than the sum of its proper divisors (795573).

2113611 is a wasteful number, since it uses less digits than its factorization.

2113611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22761.

The product of its digits is 36, while the sum is 15.

The square root of 2113611 is about 1453.8263307562. The cubic root of 2113611 is about 128.3339869909. Note that the first 3 decimals are identical.

Adding to 2113611 its reverse (1163112), we get a palindrome (3276723).

The spelling of 2113611 in words is "two million, one hundred thirteen thousand, six hundred eleven".