1311033091 has 2 divisors, whose sum is σ = 1311033092. Its totient is φ = 1311033090.

The previous prime is 1311033083. The next prime is 1311033103. The reversal of 1311033091 is 1903301131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311033091 - 2³ = 1311033083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311033001) 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 as a sum of consecutive naturals, namely, 655516545 + 655516546.

It is an arithmetic number, because the mean of its divisors is an integer number (655516546).

Almost surely, 2^1311033091 is an apocalyptic number.

1311033091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311033091 is an equidigital number, since it uses as much as digits as its factorization.

1311033091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 1311033091 is about 36208.1909379632. The cubic root of 1311033091 is about 1094.4717372950.

The spelling of 1311033091 in words is "one billion, three hundred eleven million, thirty-three thousand, ninety-one".