2011983 has 8 divisors (see below), whose sum is σ = 2689200. Its totient is φ = 1338048.

The previous prime is 2011973. The next prime is 2011987. The reversal of 2011983 is 3891102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2011983 - 2⁵ = 2011951 is a prime.

2011983 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2013 + ... + 2841.

It is an arithmetic number, because the mean of its divisors is an integer number (336150).

2^2011983 is an apocalyptic number.

2011983 is a deficient number, since it is larger than the sum of its proper divisors (677217).

2011983 is an equidigital number, since it uses as much as digits as its factorization.

2011983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2011983 is about 1418.4438656500. The cubic root of 2011983 is about 126.2432313464.

It can be divided in two parts, 20119 and 83, that added together give a palindrome (20202).

The spelling of 2011983 in words is "two million, eleven thousand, nine hundred eighty-three".