2311945459 has 4 divisors (see below), whose sum is σ = 2315381416. Its totient is φ = 2308509504.

The previous prime is 2311945457. The next prime is 2311945477. The reversal of 2311945459 is 9545491132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2311945459 - 2¹ = 2311945457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311945457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1716969 + ... + 1718314.

It is an arithmetic number, because the mean of its divisors is an integer number (578845354).

Almost surely, 2^2311945459 is an apocalyptic number.

2311945459 is a deficient number, since it is larger than the sum of its proper divisors (3435957).

2311945459 is an equidigital number, since it uses as much as digits as its factorization.

2311945459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435956.

The product of its digits is 194400, while the sum is 43.

The square root of 2311945459 is about 48082.6939657087. The cubic root of 2311945459 is about 1322.2874057660.

The spelling of 2311945459 in words is "two billion, three hundred eleven million, nine hundred forty-five thousand, four hundred fifty-nine".