3431221111 has 4 divisors (see below), whose sum is σ = 3431346912. Its totient is φ = 3431095312.

The previous prime is 3431221097. The next prime is 3431221127. The reversal of 3431221111 is 1111221343.

3431221111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1111221343 = 1489 ⋅746287.

It is a cyclic number.

It is not a de Polignac number, because 3431221111 - 2²¹ = 3429123959 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 (3431281111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2926 + ... + 82891.

It is an arithmetic number, because the mean of its divisors is an integer number (857836728).

Almost surely, 2^3431221111 is an apocalyptic number.

3431221111 is a deficient number, since it is larger than the sum of its proper divisors (125801).

3431221111 is an equidigital number, since it uses as much as digits as its factorization.

3431221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125800.

The product of its digits is 144, while the sum is 19.

The square root of 3431221111 is about 58576.6259782859. The cubic root of 3431221111 is about 1508.2832280403.

Adding to 3431221111 its reverse (1111221343), we get a palindrome (4542442454).

The spelling of 3431221111 in words is "three billion, four hundred thirty-one million, two hundred twenty-one thousand, one hundred eleven".