2109713 has 4 divisors (see below), whose sum is σ = 2118180. Its totient is φ = 2101248.

The previous prime is 2109707. The next prime is 2109727. The reversal of 2109713 is 3179012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1203409 + 906304 = 1097^2 + 952^2 .

It is a cyclic number.

It is not a de Polignac number, because 2109713 - 2⁴ = 2109697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2109733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3848 + ... + 4361.

It is an arithmetic number, because the mean of its divisors is an integer number (529545).

2^2109713 is an apocalyptic number.

It is an amenable number.

2109713 is a deficient number, since it is larger than the sum of its proper divisors (8467).

2109713 is an equidigital number, since it uses as much as digits as its factorization.

2109713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8466.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2109713 is about 1452.4851117998. The cubic root of 2109713 is about 128.2550456719.

The spelling of 2109713 in words is "two million, one hundred nine thousand, seven hundred thirteen".