2097723 has 4 divisors (see below), whose sum is σ = 2796968. Its totient is φ = 1398480.

The previous prime is 2097713. The next prime is 2097727. The reversal of 2097723 is 3277902.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2097723 - 2⁹ = 2097211 is a prime.

It is a D-number.

It is a Duffinian number.

2097723 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2097727) 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 3 ways as a sum of consecutive naturals, for example, 349618 + ... + 349623.

It is an arithmetic number, because the mean of its divisors is an integer number (699242).

2^2097723 is an apocalyptic number.

2097723 is a deficient number, since it is larger than the sum of its proper divisors (699245).

2097723 is an equidigital number, since it uses as much as digits as its factorization.

2097723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699244.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 2097723 is about 1448.3518218996. The cubic root of 2097723 is about 128.0116159706.

The spelling of 2097723 in words is "two million, ninety-seven thousand, seven hundred twenty-three".