243132312423 has 128 divisors (see below), whose sum is σ = 456154675200. Its totient is φ = 113433384960.

The previous prime is 243132312421. The next prime is 243132312433. The reversal of 243132312423 is 324213231342.

It is a happy number.

It is not a de Polignac number, because 243132312423 - 2¹ = 243132312421 is a prime.

It is a super-2 number, since 2×243132312423² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243132312421) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5422111 + ... + 5466767.

It is an arithmetic number, because the mean of its divisors is an integer number (3563708400).

Almost surely, 2^243132312423 is an apocalyptic number.

243132312423 is a deficient number, since it is larger than the sum of its proper divisors (213022362777).

243132312423 is a wasteful number, since it uses less digits than its factorization.

243132312423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44742 (or 44728 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

Adding to 243132312423 its reverse (324213231342), we get a palindrome (567345543765).

It can be divided in two parts, 243132 and 312423, that added together give a palindrome (555555).

The spelling of 243132312423 in words is "two hundred forty-three billion, one hundred thirty-two million, three hundred twelve thousand, four hundred twenty-three".