2113405 has 8 divisors (see below), whose sum is σ = 2898432. Its totient is φ = 1449168.

The previous prime is 2113399. The next prime is 2113417. The reversal of 2113405 is 5043112.

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

It is not a de Polignac number, because 2113405 - 2⁵ = 2113373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30157 + ... + 30226.

It is an arithmetic number, because the mean of its divisors is an integer number (362304).

2^2113405 is an apocalyptic number.

It is an amenable number.

2113405 is a deficient number, since it is larger than the sum of its proper divisors (785027).

2113405 is an equidigital number, since it uses as much as digits as its factorization.

2113405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60395.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2113405 is about 1453.7554815030. The cubic root of 2113405 is about 128.3298175608.

Adding to 2113405 its reverse (5043112), we get a palindrome (7156517).

The spelling of 2113405 in words is "two million, one hundred thirteen thousand, four hundred five".