1331313303 has 8 divisors (see below), whose sum is σ = 1782703728. Its totient is φ = 883732544.

The previous prime is 1331313289. The next prime is 1331313331. The reversal of 1331313303 is 3033131331.

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 1331313303 - 2¹⁴ = 1331296919 is a prime.

It is a super-2 number, since 2×1331313303² = 3544790221489539618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1331313303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331313343) 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, 951600 + ... + 952997.

It is an arithmetic number, because the mean of its divisors is an integer number (222837966).

Almost surely, 2^1331313303 is an apocalyptic number.

1331313303 is a deficient number, since it is larger than the sum of its proper divisors (451390425).

1331313303 is a wasteful number, since it uses less digits than its factorization.

1331313303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904833.

The product of its (nonzero) digits is 729, while the sum is 21.

The square root of 1331313303 is about 36487.1662780216. The cubic root of 1331313303 is about 1100.0863025952.

Adding to 1331313303 its reverse (3033131331), we get a palindrome (4364444634).

The spelling of 1331313303 in words is "one billion, three hundred thirty-one million, three hundred thirteen thousand, three hundred three".