3431711221 has 4 divisors (see below), whose sum is σ = 3487968844. Its totient is φ = 3375453600.

The previous prime is 3431711207. The next prime is 3431711233. The reversal of 3431711221 is 1221171343.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 240591121 + 3191120100 = 15511^2 + 56490^2 .

It is a cyclic number.

It is not a de Polignac number, because 3431711221 - 2¹¹ = 3431709173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3431711291) 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 in 3 ways as a sum of consecutive naturals, for example, 28128720 + ... + 28128841.

It is an arithmetic number, because the mean of its divisors is an integer number (871992211).

Almost surely, 2^3431711221 is an apocalyptic number.

It is an amenable number.

3431711221 is a deficient number, since it is larger than the sum of its proper divisors (56257623).

3431711221 is an equidigital number, since it uses as much as digits as its factorization.

3431711221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56257622.

The product of its digits is 1008, while the sum is 25.

The square root of 3431711221 is about 58580.8093235319. The cubic root of 3431711221 is about 1508.3550381894.

Adding to 3431711221 its reverse (1221171343), we get a palindrome (4652882564).

The spelling of 3431711221 in words is "three billion, four hundred thirty-one million, seven hundred eleven thousand, two hundred twenty-one".