243131441423 has 4 divisors (see below), whose sum is σ = 261833860008. Its totient is φ = 224429022840.

The previous prime is 243131441401. The next prime is 243131441431. The reversal of 243131441423 is 324144131342.

243131441423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 243131441423 - 2¹⁴ = 243131425039 is a prime.

It is a super-2 number, since 2×243131441423² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243131441423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243131491423) 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 3 ways as a sum of consecutive naturals, for example, 9351209273 + ... + 9351209298.

It is an arithmetic number, because the mean of its divisors is an integer number (65458465002).

Almost surely, 2^243131441423 is an apocalyptic number.

243131441423 is a deficient number, since it is larger than the sum of its proper divisors (18702418585).

243131441423 is a wasteful number, since it uses less digits than its factorization.

243131441423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18702418584.

The product of its digits is 27648, while the sum is 32.

Adding to 243131441423 its reverse (324144131342), we get a palindrome (567275572765).

The spelling of 243131441423 in words is "two hundred forty-three billion, one hundred thirty-one million, four hundred forty-one thousand, four hundred twenty-three".