2311121113 has 12 divisors (see below), whose sum is σ = 2689230132. Its totient is φ = 1980384000.

The previous prime is 2311121081. The next prime is 2311121143. The reversal of 2311121113 is 3111211132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1078268569 + 1232852544 = 32837^2 + 35112^2 .

It is not a de Polignac number, because 2311121113 - 2⁵ = 2311121081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311121143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326613 + ... + 333613.

It is an arithmetic number, because the mean of its divisors is an integer number (224102511).

Almost surely, 2^2311121113 is an apocalyptic number.

It is an amenable number.

2311121113 is a deficient number, since it is larger than the sum of its proper divisors (378109019).

2311121113 is an equidigital number, since it uses as much as digits as its factorization.

2311121113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13752 (or 13745 counting only the distinct ones).

The product of its digits is 36, while the sum is 16.

The square root of 2311121113 is about 48074.1210320064. The cubic root of 2311121113 is about 1322.1302290605.

Adding to 2311121113 its reverse (3111211132), we get a palindrome (5422332245).

It can be divided in two parts, 2 and 311121113, that multiplied together give a palindrome (622242226).

The spelling of 2311121113 in words is "two billion, three hundred eleven million, one hundred twenty-one thousand, one hundred thirteen".