9780331 has 8 divisors (see below), whose sum is σ = 10692864. Its totient is φ = 8871720.

The previous prime is 9780319. The next prime is 9780341. The reversal of 9780331 is 1330879.

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

It is not a de Polignac number, because 9780331 - 2⁷ = 9780203 is a prime.

It is a super-2 number, since 2×9780331² = 191309748939122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9780293 and 9780302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780341) 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 7 ways as a sum of consecutive naturals, for example, 7386 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^9780331 is an apocalyptic number.

9780331 is a deficient number, since it is larger than the sum of its proper divisors (912533).

9780331 is a wasteful number, since it uses less digits than its factorization.

9780331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 9780331 is about 3127.3520748390. The cubic root of 9780331 is about 213.8542329888.

The spelling of 9780331 in words is "nine million, seven hundred eighty thousand, three hundred thirty-one".