204243402131 has 8 divisors (see below), whose sum is σ = 204434141184. Its totient is φ = 204052748040.

The previous prime is 204243402127. The next prime is 204243402169. The reversal of 204243402131 is 131204342402.

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 204243402131 - 2² = 204243402127 is a prime.

It is a super-2 number, since 2×204243402131² (a number of 23 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 204243402131.

It is not an unprimeable number, because it can be changed into a prime (204243402331) 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, 5420900 + ... + 5458446.

It is an arithmetic number, because the mean of its divisors is an integer number (25554267648).

Almost surely, 2^204243402131 is an apocalyptic number.

204243402131 is a deficient number, since it is larger than the sum of its proper divisors (190739053).

204243402131 is a wasteful number, since it uses less digits than its factorization.

204243402131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42481.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 204243402131 its reverse (131204342402), we get a palindrome (335447744533).

The spelling of 204243402131 in words is "two hundred four billion, two hundred forty-three million, four hundred two thousand, one hundred thirty-one".