2131983 has 24 divisors (see below), whose sum is σ = 3605888. Its totient is φ = 1188432.

The previous prime is 2131981. The next prime is 2131991. The reversal of 2131983 is 3891312.

It is not a de Polignac number, because 2131983 - 2¹ = 2131981 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 (2131981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2316 + ... + 3102.

2^2131983 is an apocalyptic number.

2131983 is a deficient number, since it is larger than the sum of its proper divisors (1473905).

2131983 is a wasteful number, since it uses less digits than its factorization.

2131983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 840 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 2131983 is about 1460.1311584923. The cubic root of 2131983 is about 128.7047511210.

The spelling of 2131983 in words is "two million, one hundred thirty-one thousand, nine hundred eighty-three".