3214443721 has 2 divisors, whose sum is σ = 3214443722. Its totient is φ = 3214443720.

The previous prime is 3214443707. The next prime is 3214443733. The reversal of 3214443721 is 1273444123.

3214443721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1901396025 + 1313047696 = 43605^2 + 36236^2 .

It is a cyclic number.

It is not a de Polignac number, because 3214443721 - 2⁷ = 3214443593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3214443751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607221860 + 1607221861.

It is an arithmetic number, because the mean of its divisors is an integer number (1607221861).

Almost surely, 2^3214443721 is an apocalyptic number.

It is an amenable number.

3214443721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3214443721 is an equidigital number, since it uses as much as digits as its factorization.

3214443721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 3214443721 is about 56696.0644224976. The cubic root of 3214443721 is about 1475.8264021333.

Adding to 3214443721 its reverse (1273444123), we get a palindrome (4487887844).

The spelling of 3214443721 in words is "three billion, two hundred fourteen million, four hundred forty-three thousand, seven hundred twenty-one".