2313112221 has 40 divisors (see below), whose sum is σ = 4008023360. Its totient is φ = 1302028992.

The previous prime is 2313112189. The next prime is 2313112229. The reversal of 2313112221 is 1222113132.

It is not a de Polignac number, because 2313112221 - 2⁵ = 2313112189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2313112194 and 2313112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2313112229) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7545 + ... + 68433.

It is an arithmetic number, because the mean of its divisors is an integer number (100200584).

Almost surely, 2^2313112221 is an apocalyptic number.

2313112221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2313112221 is a deficient number, since it is larger than the sum of its proper divisors (1694911139).

2313112221 is an equidigital number, since it uses as much as digits as its factorization.

2313112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60975 (or 60966 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2313112221 is about 48094.8253037684. The cubic root of 2313112221 is about 1322.5098065198.

Adding to 2313112221 its reverse (1222113132), we get a palindrome (3535225353).

The spelling of 2313112221 in words is "two billion, three hundred thirteen million, one hundred twelve thousand, two hundred twenty-one".