2311618853 has 4 divisors (see below), whose sum is σ = 2314773228. Its totient is φ = 2308464480.

The previous prime is 2311618847. The next prime is 2311618867. The reversal of 2311618853 is 3588161132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2233791169 + 77827684 = 47263^2 + 8822^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311618853 - 2³⁰ = 1237877029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311611853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576088 + ... + 1577553.

It is an arithmetic number, because the mean of its divisors is an integer number (578693307).

Almost surely, 2^2311618853 is an apocalyptic number.

It is an amenable number.

2311618853 is a deficient number, since it is larger than the sum of its proper divisors (3154375).

2311618853 is an equidigital number, since it uses as much as digits as its factorization.

2311618853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3154374.

The product of its digits is 34560, while the sum is 38.

The square root of 2311618853 is about 48079.2975510250. The cubic root of 2311618853 is about 1322.2251368031.

Adding to 2311618853 its reverse (3588161132), we get a palindrome (5899779985).

The spelling of 2311618853 in words is "two billion, three hundred eleven million, six hundred eighteen thousand, eight hundred fifty-three".