2031134221 has 2 divisors, whose sum is σ = 2031134222. Its totient is φ = 2031134220.

The previous prime is 2031134213. The next prime is 2031134239. The reversal of 2031134221 is 1224311302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1779911721 + 251222500 = 42189^2 + 15850^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031134221 - 2³ = 2031134213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031144221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015567110 + 1015567111.

It is an arithmetic number, because the mean of its divisors is an integer number (1015567111).

Almost surely, 2^2031134221 is an apocalyptic number.

It is an amenable number.

2031134221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031134221 is an equidigital number, since it uses as much as digits as its factorization.

2031134221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2031134221 is about 45068.1064723159. The cubic root of 2031134221 is about 1266.4251922498.

Adding to 2031134221 its reverse (1224311302), we get a palindrome (3255445523).

The spelling of 2031134221 in words is "two billion, thirty-one million, one hundred thirty-four thousand, two hundred twenty-one".