3144431221 has 2 divisors, whose sum is σ = 3144431222. Its totient is φ = 3144431220.

The previous prime is 3144431189. The next prime is 3144431293. The reversal of 3144431221 is 1221344413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2969160100 + 175271121 = 54490^2 + 13239^2 .

It is a cyclic number.

It is not a de Polignac number, because 3144431221 - 2⁵ = 3144431189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3144434221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572215610 + 1572215611.

It is an arithmetic number, because the mean of its divisors is an integer number (1572215611).

Almost surely, 2^3144431221 is an apocalyptic number.

It is an amenable number.

3144431221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3144431221 is an equidigital number, since it uses as much as digits as its factorization.

3144431221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 3144431221 is about 56075.2282295846. The cubic root of 3144431221 is about 1465.0328625460.

Adding to 3144431221 its reverse (1221344413), we get a palindrome (4365775634).

The spelling of 3144431221 in words is "three billion, one hundred forty-four million, four hundred thirty-one thousand, two hundred twenty-one".