1311023033 has 2 divisors, whose sum is σ = 1311023034. Its totient is φ = 1311023032.

The previous prime is 1311023003. The next prime is 1311023057. The reversal of 1311023033 is 3303201131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1257908089 + 53114944 = 35467^2 + 7288^2 .

It is an emirp because it is prime and its reverse (3303201131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311023033 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1311023003) 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 as a sum of consecutive naturals, namely, 655511516 + 655511517.

It is an arithmetic number, because the mean of its divisors is an integer number (655511517).

Almost surely, 2^1311023033 is an apocalyptic number.

It is an amenable number.

1311023033 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311023033 is an equidigital number, since it uses as much as digits as its factorization.

1311023033 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1311023033 is about 36208.0520464717. The cubic root of 1311023033 is about 1094.4689384272.

Adding to 1311023033 its reverse (3303201131), we get a palindrome (4614224164).

The spelling of 1311023033 in words is "one billion, three hundred eleven million, twenty-three thousand, thirty-three".