204021430131 has 16 divisors (see below), whose sum is σ = 272661960704. Its totient is φ = 135697693824.

The previous prime is 204021430121. The next prime is 204021430139. The reversal of 204021430131 is 131034120402.

It is not a de Polignac number, because 204021430131 - 2¹⁴ = 204021413747 is a prime.

It is a super-2 number, since 2×204021430131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204021430098 and 204021430107.

It is not an unprimeable number, because it can be changed into a prime (204021430139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13836795 + ... + 13851531.

It is an arithmetic number, because the mean of its divisors is an integer number (17041372544).

Almost surely, 2^204021430131 is an apocalyptic number.

204021430131 is a deficient number, since it is larger than the sum of its proper divisors (68640530573).

204021430131 is a wasteful number, since it uses less digits than its factorization.

204021430131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25170.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 204021430131 its reverse (131034120402), we get a palindrome (335055550533).

The spelling of 204021430131 in words is "two hundred four billion, twenty-one million, four hundred thirty thousand, one hundred thirty-one".