1313203303 has 8 divisors (see below), whose sum is σ = 1336744800. Its totient is φ = 1289726880.

The previous prime is 1313203289. The next prime is 1313203337. The reversal of 1313203303 is 3033023131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1313203303 - 2⁵ = 1313203271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313243303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25398 + ... + 57196.

It is an arithmetic number, because the mean of its divisors is an integer number (167093100).

Almost surely, 2^1313203303 is an apocalyptic number.

1313203303 is a deficient number, since it is larger than the sum of its proper divisors (23541497).

1313203303 is an equidigital number, since it uses as much as digits as its factorization.

1313203303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32537.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 1313203303 is about 36238.1470690763. The cubic root of 1313203303 is about 1095.0753137943.

Adding to 1313203303 its reverse (3033023131), we get a palindrome (4346226434).

The spelling of 1313203303 in words is "one billion, three hundred thirteen million, two hundred three thousand, three hundred three".