204111013131 has 12 divisors (see below), whose sum is σ = 305746538552. Its totient is φ = 136074008592.

The previous prime is 204111013087. The next prime is 204111013159. The reversal of 204111013131 is 131310111402.

It is a happy number.

204111013131 is a `hidden beast` number, since 20 + 411 + 101 + 3 + 131 = 666.

It is not a de Polignac number, because 204111013131 - 2⁷ = 204111013003 is a prime.

It is a super-2 number, since 2×204111013131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204111013181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 419981266 + ... + 419981751.

Almost surely, 2^204111013131 is an apocalyptic number.

204111013131 is a deficient number, since it is larger than the sum of its proper divisors (101635525421).

204111013131 is an frugal number, since it uses more digits than its factorization.

204111013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839963032 (or 839963020 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 204111013131 its reverse (131310111402), we get a palindrome (335421124533).

The spelling of 204111013131 in words is "two hundred four billion, one hundred eleven million, thirteen thousand, one hundred thirty-one".