1313351233 has 4 divisors (see below), whose sum is σ = 1313423748. Its totient is φ = 1313278720.

The previous prime is 1313351213. The next prime is 1313351243. The reversal of 1313351233 is 3321533131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 330403329 + 982947904 = 18177^2 + 31352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313351233 is a prime.

It is a super-2 number, since 2×1313351233² = 3449782922445240578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313351198 and 1313351207.

It is not an unprimeable number, because it can be changed into a prime (1313351203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16473 + ... + 53833.

It is an arithmetic number, because the mean of its divisors is an integer number (328355937).

Almost surely, 2^1313351233 is an apocalyptic number.

It is an amenable number.

1313351233 is a deficient number, since it is larger than the sum of its proper divisors (72515).

1313351233 is an equidigital number, since it uses as much as digits as its factorization.

1313351233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72514.

The product of its digits is 2430, while the sum is 25.

The square root of 1313351233 is about 36240.1880927790. The cubic root of 1313351233 is about 1095.1164316746.

Adding to 1313351233 its reverse (3321533131), we get a palindrome (4634884364).

The spelling of 1313351233 in words is "one billion, three hundred thirteen million, three hundred fifty-one thousand, two hundred thirty-three".