1313031332323 has 4 divisors (see below), whose sum is σ = 1313034064128. Its totient is φ = 1313028600520.

The previous prime is 1313031332273. The next prime is 1313031332357. The reversal of 1313031332323 is 3232331303131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313031332323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313031332291 and 1313031332300.

It is not an unprimeable number, because it can be changed into a prime (1313031332623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432163 + ... + 1677148.

It is an arithmetic number, because the mean of its divisors is an integer number (328258516032).

Almost surely, 2^{1313031332323} is an apocalyptic number.

1313031332323 is a deficient number, since it is larger than the sum of its proper divisors (2731805).

1313031332323 is an equidigital number, since it uses as much as digits as its factorization.

1313031332323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731804.

The product of its (nonzero) digits is 8748, while the sum is 28.

Adding to 1313031332323 its reverse (3232331303131), we get a palindrome (4545362635454).

The spelling of 1313031332323 in words is "one trillion, three hundred thirteen billion, thirty-one million, three hundred thirty-two thousand, three hundred twenty-three".