1313203323 has 4 divisors (see below), whose sum is σ = 1750937768. Its totient is φ = 875468880.

The previous prime is 1313203289. The next prime is 1313203337. The reversal of 1313203323 is 3233023131.

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

It is not a de Polignac number, because 1313203323 - 2¹⁰ = 1313202299 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1313203323.

It is not an unprimeable number, because it can be changed into a prime (1313203523) 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, 218867218 + ... + 218867223.

It is an arithmetic number, because the mean of its divisors is an integer number (437734442).

Almost surely, 2^1313203323 is an apocalyptic number.

1313203323 is a deficient number, since it is larger than the sum of its proper divisors (437734445).

1313203323 is an equidigital number, since it uses as much as digits as its factorization.

1313203323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437734444.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1313203323 is about 36238.1473450286. The cubic root of 1313203323 is about 1095.0753193536.

Adding to 1313203323 its reverse (3233023131), we get a palindrome (4546226454).

The spelling of 1313203323 in words is "one billion, three hundred thirteen million, two hundred three thousand, three hundred twenty-three".