981383 has 6 divisors (see below), whose sum is σ = 1062864. Its totient is φ = 905736.

The previous prime is 981377. The next prime is 981391. The reversal of 981383 is 383189.

It is not a de Polignac number, because 981383 - 2⁶ = 981319 is a prime.

It is a super-2 number, since 2×981383² = 1926225185378, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981383.

It is not an unprimeable number, because it can be changed into a prime (981373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2735 + ... + 3072.

It is an arithmetic number, because the mean of its divisors is an integer number (177144).

2⁹⁸¹³⁸³ is an apocalyptic number.

981383 is a deficient number, since it is larger than the sum of its proper divisors (81481).

981383 is a wasteful number, since it uses less digits than its factorization.

981383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5833 (or 5820 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 981383 is about 990.6477678772. The cubic root of 981383 is about 99.3755419719.

The spelling of 981383 in words is "nine hundred eighty-one thousand, three hundred eighty-three".