3231220221349 has 2 divisors, whose sum is σ = 3231220221350. Its totient is φ = 3231220221348.

The previous prime is 3231220221301. The next prime is 3231220221367. The reversal of 3231220221349 is 9431220221323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1616249457124 + 1614970764225 = 1271318^2 + 1270815^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231220221349 - 2¹¹ = 3231220219301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3231220221149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615610110674 + 1615610110675.

It is an arithmetic number, because the mean of its divisors is an integer number (1615610110675).

Almost surely, 2^{3231220221349} is an apocalyptic number.

It is an amenable number.

3231220221349 is a deficient number, since it is larger than the sum of its proper divisors (1).

3231220221349 is an equidigital number, since it uses as much as digits as its factorization.

3231220221349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 3231220221349 in words is "three trillion, two hundred thirty-one billion, two hundred twenty million, two hundred twenty-one thousand, three hundred forty-nine".