2311134509 has 2 divisors, whose sum is σ = 2311134510. Its totient is φ = 2311134508.

The previous prime is 2311134487. The next prime is 2311134523. The reversal of 2311134509 is 9054311132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1740975625 + 570158884 = 41725^2 + 23878^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311134509 - 2¹⁶ = 2311068973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311134569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155567254 + 1155567255.

It is an arithmetic number, because the mean of its divisors is an integer number (1155567255).

Almost surely, 2^2311134509 is an apocalyptic number.

It is an amenable number.

2311134509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311134509 is an equidigital number, since it uses as much as digits as its factorization.

2311134509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 2311134509 is about 48074.2603583248. The cubic root of 2311134509 is about 1322.1327835526.

The spelling of 2311134509 in words is "two billion, three hundred eleven million, one hundred thirty-four thousand, five hundred nine".