2213131109 has 6 divisors (see below), whose sum is σ = 2574458694. Its totient is φ = 1896969480.

The previous prime is 2213131097. The next prime is 2213131117. The reversal of 2213131109 is 9011313122.

It can be written as a sum of positive squares in only one way, i.e., 1620062500 + 593068609 = 40250^2 + 24353^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2213131109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213131309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22582922 + ... + 22583019.

It is an arithmetic number, because the mean of its divisors is an integer number (429076449).

Almost surely, 2^2213131109 is an apocalyptic number.

It is an amenable number.

2213131109 is a deficient number, since it is larger than the sum of its proper divisors (361327585).

2213131109 is an equidigital number, since it uses as much as digits as its factorization.

2213131109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45165955 (or 45165948 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2213131109 is about 47043.9274402127. The cubic root of 2213131109 is about 1303.1739229306.

The spelling of 2213131109 in words is "two billion, two hundred thirteen million, one hundred thirty-one thousand, one hundred nine".