2311011091 has 2 divisors, whose sum is σ = 2311011092. Its totient is φ = 2311011090.

The previous prime is 2311011037. The next prime is 2311011149. The reversal of 2311011091 is 1901101132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2311011091 - 2¹⁵ = 2310978323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2311011191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155505545 + 1155505546.

It is an arithmetic number, because the mean of its divisors is an integer number (1155505546).

Almost surely, 2^2311011091 is an apocalyptic number.

2311011091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311011091 is an equidigital number, since it uses as much as digits as its factorization.

2311011091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 2311011091 is about 48072.9767228950. The cubic root of 2311011091 is about 1322.1092485185.

The spelling of 2311011091 in words is "two billion, three hundred eleven million, eleven thousand, ninety-one".