4243313121 has 8 divisors (see below), whose sum is σ = 5735254560. Its totient is φ = 2790123552.

The previous prime is 4243313119. The next prime is 4243313153. The reversal of 4243313121 is 1213133424.

It is a happy number.

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

It is not a de Polignac number, because 4243313121 - 2¹ = 4243313119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4243313091 and 4243313100.

It is not an unprimeable number, because it can be changed into a prime (4243333121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9687711 + ... + 9688148.

It is an arithmetic number, because the mean of its divisors is an integer number (716906820).

Almost surely, 2^4243313121 is an apocalyptic number.

It is an amenable number.

4243313121 is a deficient number, since it is larger than the sum of its proper divisors (1491941439).

4243313121 is a wasteful number, since it uses less digits than its factorization.

4243313121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19375935.

The product of its digits is 1728, while the sum is 24.

The square root of 4243313121 is about 65140.7178422222. The cubic root of 4243313121 is about 1618.9559295247.

Adding to 4243313121 its reverse (1213133424), we get a palindrome (5456446545).

The spelling of 4243313121 in words is "four billion, two hundred forty-three million, three hundred thirteen thousand, one hundred twenty-one".