2113787 has 8 divisors (see below), whose sum is σ = 2288496. Its totient is φ = 1940832.

The previous prime is 2113759. The next prime is 2113789. The reversal of 2113787 is 7873112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113787 - 2¹⁶ = 2048251 is a prime.

It is a super-3 number, since 3×2113787³ = 28333806429829603209, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113789) 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, 3308 + ... + 3894.

It is an arithmetic number, because the mean of its divisors is an integer number (286062).

2^2113787 is an apocalyptic number.

2113787 is a deficient number, since it is larger than the sum of its proper divisors (174709).

2113787 is a wasteful number, since it uses less digits than its factorization.

2113787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877.

The product of its digits is 2352, while the sum is 29.

The square root of 2113787 is about 1453.8868594220. The cubic root of 2113787 is about 128.3375490079.

Adding to 2113787 its reverse (7873112), we get a palindrome (9986899).

The spelling of 2113787 in words is "two million, one hundred thirteen thousand, seven hundred eighty-seven".