1311134233 has 4 divisors (see below), whose sum is σ = 1316859940. Its totient is φ = 1305408528.

The previous prime is 1311134213. The next prime is 1311134261. The reversal of 1311134233 is 3324311131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3324311131 = 4583 ⋅725357.

It can be written as a sum of positive squares in 2 ways, for example, as 1121714064 + 189420169 = 33492^2 + 13763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311134233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311134213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2862510 + ... + 2862967.

It is an arithmetic number, because the mean of its divisors is an integer number (329214985).

Almost surely, 2^1311134233 is an apocalyptic number.

It is an amenable number.

1311134233 is a deficient number, since it is larger than the sum of its proper divisors (5725707).

1311134233 is an equidigital number, since it uses as much as digits as its factorization.

1311134233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725706.

The product of its digits is 648, while the sum is 22.

The square root of 1311134233 is about 36209.5875839535. The cubic root of 1311134233 is about 1094.4998815665.

Adding to 1311134233 its reverse (3324311131), we get a palindrome (4635445364).

The spelling of 1311134233 in words is "one billion, three hundred eleven million, one hundred thirty-four thousand, two hundred thirty-three".