2311999999 has 4 divisors (see below), whose sum is σ = 2322367936. Its totient is φ = 2301632064.

The previous prime is 2311999969. The next prime is 2312000023. The reversal of 2311999999 is 9999991132.

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 2311999999 - 2⁵ = 2311999967 is a prime.

It is a Duffinian number.

2311999999 is a modest number, since divided by 99999 gives 23119 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311999969) 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, 5183634 + ... + 5184079.

It is an arithmetic number, because the mean of its divisors is an integer number (580591984).

Almost surely, 2^2311999999 is an apocalyptic number.

2311999999 is a deficient number, since it is larger than the sum of its proper divisors (10367937).

2311999999 is a wasteful number, since it uses less digits than its factorization.

2311999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10367936.

The product of its digits is 3188646, while the sum is 61.

The square root of 2311999999 is about 48083.2611102866. The cubic root of 2311999999 is about 1322.2978035009.

The spelling of 2311999999 in words is "two billion, three hundred eleven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".