1000331231321 has 8 divisors (see below), whose sum is σ = 1002269194560. Its totient is φ = 998393840752.

The previous prime is 1000331231311. The next prime is 1000331231329. The reversal of 1000331231321 is 1231321330001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000331231321 is a prime.

It is a super-2 number, since 2×1000331231321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000331231293 and 1000331231302.

It is not an unprimeable number, because it can be changed into a prime (1000331231329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3440411 + ... + 3719823.

It is an arithmetic number, because the mean of its divisors is an integer number (125283649320).

Almost surely, 2^{1000331231321} is an apocalyptic number.

It is an amenable number.

1000331231321 is a deficient number, since it is larger than the sum of its proper divisors (1937963239).

1000331231321 is an equidigital number, since it uses as much as digits as its factorization.

1000331231321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286335.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1000331231321 its reverse (1231321330001), we get a palindrome (2231652561322).

The spelling of 1000331231321 in words is "one trillion, three hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty-one".