4243131123 has 32 divisors (see below), whose sum is σ = 7225569792. Its totient is φ = 2150457600.

The previous prime is 4243131083. The next prime is 4243131131. The reversal of 4243131123 is 3211313424.

It is a happy number.

It is not a de Polignac number, because 4243131123 - 2⁸ = 4243130867 is a prime.

It is a super-2 number, since 2×4243131123² = 36008323453942482258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4243131093 and 4243131102.

It is not an unprimeable number, because it can be changed into a prime (4243131163) 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 31 ways as a sum of consecutive naturals, for example, 214536 + ... + 233477.

It is an arithmetic number, because the mean of its divisors is an integer number (225799056).

Almost surely, 2^4243131123 is an apocalyptic number.

4243131123 is a deficient number, since it is larger than the sum of its proper divisors (2982438669).

4243131123 is a wasteful number, since it uses less digits than its factorization.

4243131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448075.

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

The square root of 4243131123 is about 65139.3208668927. The cubic root of 4243131123 is about 1618.9327832280.

Adding to 4243131123 its reverse (3211313424), we get a palindrome (7454444547).

The spelling of 4243131123 in words is "four billion, two hundred forty-three million, one hundred thirty-one thousand, one hundred twenty-three".