981333 has 6 divisors (see below), whose sum is σ = 1417494. Its totient is φ = 654216.

The previous prime is 981319. The next prime is 981373. The reversal of 981333 is 333189.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 400689 = 762^2 + 633^2 .

It is not a de Polignac number, because 981333 - 2⁵ = 981301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 981297 and 981306.

It is a congruent number.

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, 54510 + ... + 54527.

It is an arithmetic number, because the mean of its divisors is an integer number (236249).

2⁹⁸¹³³³ is an apocalyptic number.

It is an amenable number.

981333 is a deficient number, since it is larger than the sum of its proper divisors (436161).

981333 is a wasteful number, since it uses less digits than its factorization.

981333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109043 (or 109040 counting only the distinct ones).

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

The square root of 981333 is about 990.6225315427. The cubic root of 981333 is about 99.3738542647.

It can be divided in two parts, 98 and 1333, that added together give a triangular number (1431 = T₅₃).

The spelling of 981333 in words is "nine hundred eighty-one thousand, three hundred thirty-three".