331983 has 6 divisors (see below), whose sum is σ = 479544. Its totient is φ = 221316.

The previous prime is 331973. The next prime is 331997. The reversal of 331983 is 389133.

It is not a de Polignac number, because 331983 - 2⁴ = 331967 is a prime.

It is a super-2 number, since 2×331983² = 220425424578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18435 + ... + 18452.

It is an arithmetic number, because the mean of its divisors is an integer number (79924).

2³³¹⁹⁸³ is an apocalyptic number.

331983 is a deficient number, since it is larger than the sum of its proper divisors (147561).

331983 is a wasteful number, since it uses less digits than its factorization.

331983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36893 (or 36890 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 331983 is about 576.1796594813. The cubic root of 331983 is about 69.2423738382.

It can be divided in two parts, 33 and 1983, that added together give a triangular number (2016 = T₆₃).

The spelling of 331983 in words is "three hundred thirty-one thousand, nine hundred eighty-three".