4131123443 has 4 divisors (see below), whose sum is σ = 4138161720. Its totient is φ = 4124085168.

The previous prime is 4131123401. The next prime is 4131123463. The reversal of 4131123443 is 3443211314.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4131123443 - 2¹² = 4131119347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4131123463) 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, 3518258 + ... + 3519431.

It is an arithmetic number, because the mean of its divisors is an integer number (1034540430).

Almost surely, 2^4131123443 is an apocalyptic number.

4131123443 is a deficient number, since it is larger than the sum of its proper divisors (7038277).

4131123443 is an equidigital number, since it uses as much as digits as its factorization.

4131123443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038276.

The product of its digits is 3456, while the sum is 26.

The square root of 4131123443 is about 64273.8161540141. The cubic root of 4131123443 is about 1604.5603546036.

Adding to 4131123443 its reverse (3443211314), we get a palindrome (7574334757).

The spelling of 4131123443 in words is "four billion, one hundred thirty-one million, one hundred twenty-three thousand, four hundred forty-three".