1311032303 has 8 divisors (see below), whose sum is σ = 1510121472. Its totient is φ = 1114892856.

The previous prime is 1311032291. The next prime is 1311032321. The reversal of 1311032303 is 3032301131.

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

It is not a de Polignac number, because 1311032303 - 2⁴ = 1311032287 is a prime.

It is a super-3 number, since 3×1311032303³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311032353) 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 7 ways as a sum of consecutive naturals, for example, 736475 + ... + 738252.

It is an arithmetic number, because the mean of its divisors is an integer number (188765184).

Almost surely, 2^1311032303 is an apocalyptic number.

1311032303 is a deficient number, since it is larger than the sum of its proper divisors (199089169).

1311032303 is a wasteful number, since it uses less digits than its factorization.

1311032303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474861.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1311032303 is about 36208.1800564458. The cubic root of 1311032303 is about 1094.4715180166.

Adding to 1311032303 its reverse (3032301131), we get a palindrome (4343333434).

The spelling of 1311032303 in words is "one billion, three hundred eleven million, thirty-two thousand, three hundred three".