983731321 has 8 divisors (see below), whose sum is σ = 1054246464. Its totient is φ = 915528240.

The previous prime is 983731313. The next prime is 983731349. The reversal of 983731321 is 123137389.

983731321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is the 12805-th star number.

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

It is a cyclic number.

It is not a de Polignac number, because 983731321 - 2³ = 983731313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (983731361) 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, 577135 + ... + 578836.

It is an arithmetic number, because the mean of its divisors is an integer number (131780808).

Almost surely, 2^983731321 is an apocalyptic number.

It is an amenable number.

983731321 is a deficient number, since it is larger than the sum of its proper divisors (70515143).

983731321 is a wasteful number, since it uses less digits than its factorization.

983731321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156031.

The product of its digits is 27216, while the sum is 37.

The square root of 983731321 is about 31364.4914034964. The cubic root of 983731321 is about 994.5474305220.

The spelling of 983731321 in words is "nine hundred eighty-three million, seven hundred thirty-one thousand, three hundred twenty-one".