2113387 has 4 divisors (see below), whose sum is σ = 2116296. Its totient is φ = 2110480.

The previous prime is 2113379. The next prime is 2113393. The reversal of 2113387 is 7833112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2113387 - 2³ = 2113379 is a prime.

It is a super-2 number, since 2×2113387² = 8932809223538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113337) 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, 687 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (529074).

2^2113387 is an apocalyptic number.

2113387 is a deficient number, since it is larger than the sum of its proper divisors (2909).

2113387 is a wasteful number, since it uses less digits than its factorization.

2113387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908.

The product of its digits is 1008, while the sum is 25.

The square root of 2113387 is about 1453.7492906275. The cubic root of 2113387 is about 128.3294532288.

Adding to 2113387 its reverse (7833112), we get a palindrome (9946499).

It can be divided in two parts, 2113 and 387, that added together give a square (2500 = 50²).

The spelling of 2113387 in words is "two million, one hundred thirteen thousand, three hundred eighty-seven".