1311133303 has 8 divisors (see below), whose sum is σ = 1319207472. Its totient is φ = 1303073856.

The previous prime is 1311133283. The next prime is 1311133309. The reversal of 1311133303 is 3033311131.

It is a happy number.

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 1311133303 - 2²⁵ = 1277578871 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 (1311133309) 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, 213076 + ... + 219142.

It is an arithmetic number, because the mean of its divisors is an integer number (164900934).

Almost surely, 2^1311133303 is an apocalyptic number.

1311133303 is a deficient number, since it is larger than the sum of its proper divisors (8074169).

1311133303 is a wasteful number, since it uses less digits than its factorization.

1311133303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7361.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 1311133303 is about 36209.5747420485. The cubic root of 1311133303 is about 1094.4996227868.

Adding to 1311133303 its reverse (3033311131), we get a palindrome (4344444434).

The spelling of 1311133303 in words is "one billion, three hundred eleven million, one hundred thirty-three thousand, three hundred three".