243203124131 has 8 divisors (see below), whose sum is σ = 265379833344. Its totient is φ = 221037637320.

The previous prime is 243203124103. The next prime is 243203124137. The reversal of 243203124131 is 131421302342.

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 243203124131 - 2³⁰ = 242129382307 is a prime.

It is a super-2 number, since 2×243203124131² (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 243203124131.

It is not an unprimeable number, because it can be changed into a prime (243203124137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2760251 + ... + 2846996.

It is an arithmetic number, because the mean of its divisors is an integer number (33172479168).

Almost surely, 2^243203124131 is an apocalyptic number.

243203124131 is a deficient number, since it is larger than the sum of its proper divisors (22176709213).

243203124131 is a wasteful number, since it uses less digits than its factorization.

243203124131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611201.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 243203124131 its reverse (131421302342), we get a palindrome (374624426473).

The spelling of 243203124131 in words is "two hundred forty-three billion, two hundred three million, one hundred twenty-four thousand, one hundred thirty-one".