2101983 has 8 divisors (see below), whose sum is σ = 3018288. Its totient is φ = 1293504.

The previous prime is 2101961. The next prime is 2102021. The reversal of 2101983 is 3891012.

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

It is not a de Polignac number, because 2101983 - 2⁹ = 2101471 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101903) 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, 26910 + ... + 26987.

It is an arithmetic number, because the mean of its divisors is an integer number (377286).

2^2101983 is an apocalyptic number.

2101983 is a deficient number, since it is larger than the sum of its proper divisors (916305).

2101983 is a wasteful number, since it uses less digits than its factorization.

2101983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53913.

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

The square root of 2101983 is about 1449.8217131772. The cubic root of 2101983 is about 128.0982115718.

Adding to 2101983 its reverse (3891012), we get a palindrome (5992995).

The spelling of 2101983 in words is "two million, one hundred one thousand, nine hundred eighty-three".