4243120331 has 6 divisors (see below), whose sum is σ = 4344094260. Its totient is φ = 4144441308.

The previous prime is 4243120313. The next prime is 4243120333. The reversal of 4243120331 is 1330213424.

It is not a de Polignac number, because 4243120331 - 2⁶ = 4243120267 is a prime.

It is a super-2 number, since 2×4243120331² = 36008140286691099122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4243120297 and 4243120306.

It is not an unprimeable number, because it can be changed into a prime (4243120333) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1145561 + ... + 1149258.

It is an arithmetic number, because the mean of its divisors is an integer number (724015710).

Almost surely, 2^4243120331 is an apocalyptic number.

4243120331 is a deficient number, since it is larger than the sum of its proper divisors (100973929).

4243120331 is an equidigital number, since it uses as much as digits as its factorization.

4243120331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2294905 (or 2294862 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 4243120331 is about 65139.2380290098. The cubic root of 4243120331 is about 1618.9314106930.

Adding to 4243120331 its reverse (1330213424), we get a palindrome (5573333755).

The spelling of 4243120331 in words is "four billion, two hundred forty-three million, one hundred twenty thousand, three hundred thirty-one".