3113132221 has 2 divisors, whose sum is σ = 3113132222. Its totient is φ = 3113132220.

The previous prime is 3113132213. The next prime is 3113132303. The reversal of 3113132221 is 1222313113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3012912100 + 100220121 = 54890^2 + 10011^2 .

It is a cyclic number.

It is not a de Polignac number, because 3113132221 - 2³ = 3113132213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3113432221) 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 as a sum of consecutive naturals, namely, 1556566110 + 1556566111.

It is an arithmetic number, because the mean of its divisors is an integer number (1556566111).

Almost surely, 2^3113132221 is an apocalyptic number.

It is an amenable number.

3113132221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3113132221 is an equidigital number, since it uses as much as digits as its factorization.

3113132221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 3113132221 is about 55795.4498234399. The cubic root of 3113132221 is about 1460.1557694876.

Adding to 3113132221 its reverse (1222313113), we get a palindrome (4335445334).

The spelling of 3113132221 in words is "three billion, one hundred thirteen million, one hundred thirty-two thousand, two hundred twenty-one".