2113723 has 8 divisors (see below), whose sum is σ = 2282400. Its totient is φ = 1951488.

The previous prime is 2113703. The next prime is 2113733. The reversal of 2113723 is 3273112.

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 2113723 - 2⁹ = 2113211 is a prime.

It is a Duffinian number.

2113723 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2113723.

It is not an unprimeable number, because it can be changed into a prime (2113703) 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, 918 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (285300).

2^2113723 is an apocalyptic number.

2113723 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2113723 is a deficient number, since it is larger than the sum of its proper divisors (168677).

2113723 is a wasteful number, since it uses less digits than its factorization.

2113723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3221.

The product of its digits is 252, while the sum is 19.

The square root of 2113723 is about 1453.8648492896. The cubic root of 2113723 is about 128.3362537519.

Adding to 2113723 its reverse (3273112), we get a palindrome (5386835).

The spelling of 2113723 in words is "two million, one hundred thirteen thousand, seven hundred twenty-three".