3031112221 has 4 divisors (see below), whose sum is σ = 3058920700. Its totient is φ = 3003303744.

The previous prime is 3031112209. The next prime is 3031112267. The reversal of 3031112221 is 1222111303.

3031112221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2405412025 + 625700196 = 49045^2 + 25014^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031112221 - 2²⁵ = 2997557789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3031112195 and 3031112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031113221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13904076 + ... + 13904293.

It is an arithmetic number, because the mean of its divisors is an integer number (764730175).

Almost surely, 2^3031112221 is an apocalyptic number.

It is an amenable number.

3031112221 is a deficient number, since it is larger than the sum of its proper divisors (27808479).

3031112221 is a wasteful number, since it uses less digits than its factorization.

3031112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27808478.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 3031112221 is about 55055.5376052219. The cubic root of 3031112221 is about 1447.2181656134.

Adding to 3031112221 its reverse (1222111303), we get a palindrome (4253223524).

The spelling of 3031112221 in words is "three billion, thirty-one million, one hundred twelve thousand, two hundred twenty-one".