2113917 has 16 divisors (see below), whose sum is σ = 3084480. Its totient is φ = 1279872.

The previous prime is 2113913. The next prime is 2113931. The reversal of 2113917 is 7193112.

It is not a de Polignac number, because 2113917 - 2² = 2113913 is a prime.

2113917 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209 + ... + 3017.

It is an arithmetic number, because the mean of its divisors is an integer number (192780).

2^2113917 is an apocalyptic number.

It is an amenable number.

2113917 is a deficient number, since it is larger than the sum of its proper divisors (970563).

2113917 is a wasteful number, since it uses less digits than its factorization.

2113917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its digits is 378, while the sum is 24.

The square root of 2113917 is about 1453.9315664776. The cubic root of 2113917 is about 128.3401799162.

The spelling of 2113917 in words is "two million, one hundred thirteen thousand, nine hundred seventeen".