1321324330331 has 8 divisors (see below), whose sum is σ = 1353569724528. Its totient is φ = 1289079792000.

The previous prime is 1321324330327. The next prime is 1321324330349. The reversal of 1321324330331 is 1330334231231.

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 1321324330331 - 2² = 1321324330327 is a prime.

It is a super-2 number, since 2×1321324330331² (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 = 1321324330294 and 1321324330303.

It is not an unprimeable number, because it can be changed into a prime (1321324330351) 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, 3834836 + ... + 4165166.

It is an arithmetic number, because the mean of its divisors is an integer number (169196215566).

Almost surely, 2^{1321324330331} is an apocalyptic number.

1321324330331 is a deficient number, since it is larger than the sum of its proper divisors (32245394197).

1321324330331 is an equidigital number, since it uses as much as digits as its factorization.

1321324330331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427933.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 1321324330331 its reverse (1330334231231), we get a palindrome (2651658561562).

It can be divided in two parts, 1321324 and 330331, that multiplied together give a square (436474278244 = 660662²).

The spelling of 1321324330331 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-four million, three hundred thirty thousand, three hundred thirty-one".