1321342330331 has 4 divisors (see below), whose sum is σ = 1321348366200. Its totient is φ = 1321336294464.

The previous prime is 1321342330279. The next prime is 1321342330337. The reversal of 1321342330331 is 1330332431231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321342330331 - 2⁶ = 1321342330267 is a prime.

It is a super-2 number, since 2×1321342330331² (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 = 1321342330294 and 1321342330303.

It is not an unprimeable number, because it can be changed into a prime (1321342330337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2676701 + ... + 3131678.

It is an arithmetic number, because the mean of its divisors is an integer number (330337091550).

Almost surely, 2^{1321342330331} is an apocalyptic number.

1321342330331 is a deficient number, since it is larger than the sum of its proper divisors (6035869).

1321342330331 is an equidigital number, since it uses as much as digits as its factorization.

1321342330331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6035868.

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

Adding to 1321342330331 its reverse (1330332431231), we get a palindrome (2651674761562).

The spelling of 1321342330331 in words is "one trillion, three hundred twenty-one billion, three hundred forty-two million, three hundred thirty thousand, three hundred thirty-one".