2115723 has 16 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 1354560.

The previous prime is 2115721. The next prime is 2115727. The reversal of 2115723 is 3275112.

It is not a de Polignac number, because 2115723 - 2¹ = 2115721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115723.

It is not an unprimeable number, because it can be changed into a prime (2115721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12586 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (183456).

2^2115723 is an apocalyptic number.

2115723 is a deficient number, since it is larger than the sum of its proper divisors (819573).

2115723 is a wasteful number, since it uses less digits than its factorization.

2115723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its digits is 420, while the sum is 21.

The square root of 2115723 is about 1454.5525085056. The cubic root of 2115723 is about 128.3767181514.

It can be divided in two parts, 211572 and 3, that added together give a triangular number (211575 = T₆₅₀).

The spelling of 2115723 in words is "two million, one hundred fifteen thousand, seven hundred twenty-three".