243120540131 has 8 divisors (see below), whose sum is σ = 294196284000. Its totient is φ = 196130855808.

The previous prime is 243120540101. The next prime is 243120540151. The reversal of 243120540131 is 131045021342.

It is a happy number.

243120540131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243120540131 - 2⁶ = 243120540067 is a prime.

It is a super-2 number, since 2×243120540131² (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 243120540131.

It is not an unprimeable number, because it can be changed into a prime (243120540101) 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 7 ways as a sum of consecutive naturals, for example, 1021514756 + ... + 1021514993.

It is an arithmetic number, because the mean of its divisors is an integer number (36774535500).

Almost surely, 2^243120540131 is an apocalyptic number.

243120540131 is a deficient number, since it is larger than the sum of its proper divisors (51075743869).

243120540131 is a wasteful number, since it uses less digits than its factorization.

243120540131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043029773.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243120540131 its reverse (131045021342), we get a palindrome (374165561473).

The spelling of 243120540131 in words is "two hundred forty-three billion, one hundred twenty million, five hundred forty thousand, one hundred thirty-one".