243124004331 has 32 divisors (see below), whose sum is σ = 389900051520. Its totient is φ = 148839524352.

The previous prime is 243124004329. The next prime is 243124004371. The reversal of 243124004331 is 133400421342.

243124004331 is a `hidden beast` number, since 243 + 12 + 400 + 4 + 3 + 3 + 1 = 666.

It is not a de Polignac number, because 243124004331 - 2¹ = 243124004329 is a prime.

It is a super-2 number, since 2×243124004331² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 243124004295 and 243124004304.

It is not an unprimeable number, because it can be changed into a prime (243124004371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1726716 + ... + 1862201.

It is an arithmetic number, because the mean of its divisors is an integer number (12184376610).

Almost surely, 2^243124004331 is an apocalyptic number.

243124004331 is a deficient number, since it is larger than the sum of its proper divisors (146776047189).

243124004331 is a wasteful number, since it uses less digits than its factorization.

243124004331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589132 (or 3589126 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 243124004331 its reverse (133400421342), we get a palindrome (376524425673).

The spelling of 243124004331 in words is "two hundred forty-three billion, one hundred twenty-four million, four thousand, three hundred thirty-one".