1311133233 has 8 divisors (see below), whose sum is σ = 1750857408. Its totient is φ = 872748944.

The previous prime is 1311133231. The next prime is 1311133283. The reversal of 1311133233 is 3323311131.

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 1311133233 - 2¹ = 1311133231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311133231) 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, 332685 + ... + 336602.

It is an arithmetic number, because the mean of its divisors is an integer number (218857176).

Almost surely, 2^1311133233 is an apocalyptic number.

It is an amenable number.

1311133233 is a deficient number, since it is larger than the sum of its proper divisors (439724175).

1311133233 is an equidigital number, since it uses as much as digits as its factorization.

1311133233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669943.

The product of its digits is 486, while the sum is 21.

The square root of 1311133233 is about 36209.5737754534. The cubic root of 1311133233 is about 1094.4996033087.

Adding to 1311133233 its reverse (3323311131), we get a palindrome (4634444364).

The spelling of 1311133233 in words is "one billion, three hundred eleven million, one hundred thirty-three thousand, two hundred thirty-three".