9730621321 has 8 divisors (see below), whose sum is σ = 9816567624. Its totient is φ = 9644891520.

The previous prime is 9730621319. The next prime is 9730621331. The reversal of 9730621321 is 1231260379.

It can be written as a sum of positive squares in 4 ways, for example, as 1092963600 + 8637657721 = 33060^2 + 92939^2 .

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 9730621321 - 2¹ = 9730621319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9730621331) 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, 36831 + ... + 144283.

It is an arithmetic number, because the mean of its divisors is an integer number (1227070953).

Almost surely, 2^9730621321 is an apocalyptic number.

It is an amenable number.

9730621321 is a deficient number, since it is larger than the sum of its proper divisors (85946303).

9730621321 is a wasteful number, since it uses less digits than its factorization.

9730621321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108251.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 9730621321 is about 98643.9117279926. The cubic root of 9730621321 is about 2134.9130434595.

The spelling of 9730621321 in words is "nine billion, seven hundred thirty million, six hundred twenty-one thousand, three hundred twenty-one".