2100973 has 12 divisors (see below), whose sum is σ = 2493180. Its totient is φ = 1764672.

The previous prime is 2100953. The next prime is 2100983. The reversal of 2100973 is 3790012.

It can be written as a sum of positive squares in 2 ways, for example, as 1695204 + 405769 = 1302^2 + 637^2 .

It is not a de Polignac number, because 2100973 - 2⁵ = 2100941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2193 + ... + 3001.

It is an arithmetic number, because the mean of its divisors is an integer number (207765).

2^2100973 is an apocalyptic number.

It is an amenable number.

2100973 is a deficient number, since it is larger than the sum of its proper divisors (392207).

2100973 is an equidigital number, since it uses as much as digits as its factorization.

2100973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 2100973 is about 1449.4733526354. The cubic root of 2100973 is about 128.0776912787.

Adding to 2100973 its reverse (3790012), we get a palindrome (5890985).

The spelling of 2100973 in words is "two million, one hundred thousand, nine hundred seventy-three".