4131243221 has 8 divisors (see below), whose sum is σ = 4736317440. Its totient is φ = 3529893168.

The previous prime is 4131243217. The next prime is 4131243223. The reversal of 4131243221 is 1223421314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4131243221 - 2² = 4131243217 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 (4131243223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928661 + ... + 933098.

It is an arithmetic number, because the mean of its divisors is an integer number (592039680).

Almost surely, 2^4131243221 is an apocalyptic number.

It is an amenable number.

4131243221 is a deficient number, since it is larger than the sum of its proper divisors (605074219).

4131243221 is a wasteful number, since it uses less digits than its factorization.

4131243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862083.

The product of its digits is 1152, while the sum is 23.

The square root of 4131243221 is about 64274.7479263824. The cubic root of 4131243221 is about 1604.5758620214.

Adding to 4131243221 its reverse (1223421314), we get a palindrome (5354664535).

The spelling of 4131243221 in words is "four billion, one hundred thirty-one million, two hundred forty-three thousand, two hundred twenty-one".