1313321333 has 4 divisors (see below), whose sum is σ = 1314273708. Its totient is φ = 1312368960.

The previous prime is 1313321323. The next prime is 1313321341. The reversal of 1313321333 is 3331233131.

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

It can be written as a sum of positive squares in 2 ways, for example, as 749828689 + 563492644 = 27383^2 + 23738^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313321333 - 2¹² = 1313317237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313321299 and 1313321308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313321323) 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 3 ways as a sum of consecutive naturals, for example, 474116 + ... + 476877.

It is an arithmetic number, because the mean of its divisors is an integer number (328568427).

Almost surely, 2^1313321333 is an apocalyptic number.

It is an amenable number.

1313321333 is a deficient number, since it is larger than the sum of its proper divisors (952375).

1313321333 is an equidigital number, since it uses as much as digits as its factorization.

1313321333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952374.

The product of its digits is 1458, while the sum is 23.

The square root of 1313321333 is about 36239.7755649783. The cubic root of 1313321333 is about 1095.1081210696.

Adding to 1313321333 its reverse (3331233131), we get a palindrome (4644554464).

The spelling of 1313321333 in words is "one billion, three hundred thirteen million, three hundred twenty-one thousand, three hundred thirty-three".