2113305 has 16 divisors (see below), whose sum is σ = 3421440. Its totient is φ = 1113728.

The previous prime is 2113291. The next prime is 2113333. The reversal of 2113305 is 5033112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2113305 - 2⁴ = 2113289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544 + ... + 2126.

It is an arithmetic number, because the mean of its divisors is an integer number (213840).

2^2113305 is an apocalyptic number.

It is an amenable number.

2113305 is a deficient number, since it is larger than the sum of its proper divisors (1308135).

2113305 is a wasteful number, since it uses less digits than its factorization.

2113305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 2113305 is about 1453.7210874167. The cubic root of 2113305 is about 128.3277934679.

Adding to 2113305 its reverse (5033112), we get a palindrome (7146417).

The spelling of 2113305 in words is "two million, one hundred thirteen thousand, three hundred five".