1002320321331 has 8 divisors (see below), whose sum is σ = 1527345251584. Its totient is φ = 572754469320.

The previous prime is 1002320321323. The next prime is 1002320321339. The reversal of 1002320321331 is 1331230232001.

It is an interprime number because it is at equal distance from previous prime (1002320321323) and next prime (1002320321339).

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

It is not a de Polignac number, because 1002320321331 - 2³ = 1002320321323 is a prime.

It is a super-2 number, since 2×1002320321331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 47729539111 = 1002320321331 / (1 + 0 + 0 + 2 + 3 + 2 + 0 + 3 + 2 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002320321298 and 1002320321307.

It is not an unprimeable number, because it can be changed into a prime (1002320321339) 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, 23864769535 + ... + 23864769576.

It is an arithmetic number, because the mean of its divisors is an integer number (190918156448).

Almost surely, 2^{1002320321331} is an apocalyptic number.

1002320321331 is a deficient number, since it is larger than the sum of its proper divisors (525024930253).

1002320321331 is an equidigital number, since it uses as much as digits as its factorization.

1002320321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47729539121.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1002320321331 its reverse (1331230232001), we get a palindrome (2333550553332).

The spelling of 1002320321331 in words is "one trillion, two billion, three hundred twenty million, three hundred twenty-one thousand, three hundred thirty-one".