1020352331321 has 8 divisors (see below), whose sum is σ = 1055737686600. Its totient is φ = 984980362240.

The previous prime is 1020352331311. The next prime is 1020352331333. The reversal of 1020352331321 is 1231332530201.

It can be written as a sum of positive squares in 4 ways, for example, as 436472956921 + 583879374400 = 660661^2 + 764120^2 .

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 1020352331321 - 2¹⁰ = 1020352330297 is a prime.

It is a super-2 number, since 2×1020352331321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020352331311) 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, 3191336 + ... + 3496473.

It is an arithmetic number, because the mean of its divisors is an integer number (131967210825).

Almost surely, 2^{1020352331321} is an apocalyptic number.

It is an amenable number.

1020352331321 is a deficient number, since it is larger than the sum of its proper divisors (35385355279).

1020352331321 is an equidigital number, since it uses as much as digits as its factorization.

1020352331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6693099.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 1020352331321 its reverse (1231332530201), we get a palindrome (2251684861522).

The spelling of 1020352331321 in words is "one trillion, twenty billion, three hundred fifty-two million, three hundred thirty-one thousand, three hundred twenty-one".