2011873 has 4 divisors (see below), whose sum is σ = 2014740. Its totient is φ = 2009008.

The previous prime is 2011861. The next prime is 2011897. The reversal of 2011873 is 3781102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1067089 + 944784 = 1033^2 + 972^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011873 - 2¹³ = 2003681 is a prime.

It is a Duffinian number.

2011873 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2011843) 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, 411 + ... + 2047.

It is an arithmetic number, because the mean of its divisors is an integer number (503685).

2^2011873 is an apocalyptic number.

It is an amenable number.

2011873 is a deficient number, since it is larger than the sum of its proper divisors (2867).

2011873 is a wasteful number, since it uses less digits than its factorization.

2011873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2011873 is about 1418.4050902334. The cubic root of 2011873 is about 126.2409306297.

Adding to 2011873 its reverse (3781102), we get a palindrome (5792975).

The spelling of 2011873 in words is "two million, eleven thousand, eight hundred seventy-three".