3431522321 has 4 divisors (see below), whose sum is σ = 3431697444. Its totient is φ = 3431347200.

The previous prime is 3431522293. The next prime is 3431522327. The reversal of 3431522321 is 1232251343.

It is a happy number.

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 102232321 + 3329290000 = 10111^2 + 57700^2 .

It is a cyclic number.

It is not a de Polignac number, because 3431522321 - 2⁶ = 3431522257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3431522327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53840 + ... + 98801.

It is an arithmetic number, because the mean of its divisors is an integer number (857924361).

Almost surely, 2^3431522321 is an apocalyptic number.

It is an amenable number.

3431522321 is a deficient number, since it is larger than the sum of its proper divisors (175123).

3431522321 is a wasteful number, since it uses less digits than its factorization.

3431522321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175122.

The product of its digits is 4320, while the sum is 26.

The square root of 3431522321 is about 58579.1969985933. The cubic root of 3431522321 is about 1508.3273616673.

Adding to 3431522321 its reverse (1232251343), we get a palindrome (4663773664).

The spelling of 3431522321 in words is "three billion, four hundred thirty-one million, five hundred twenty-two thousand, three hundred twenty-one".