204131112 has 64 divisors (see below), whose sum is σ = 519566400. Its totient is φ = 66823680.

The previous prime is 204131099. The next prime is 204131129. The reversal of 204131112 is 211131402.

It is a junction number, because it is equal to n+sod(n) for n = 204131091 and 204131100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484662 + ... + 485082.

It is an arithmetic number, because the mean of its divisors is an integer number (8118225).

Almost surely, 2^204131112 is an apocalyptic number.

It is an amenable number.

204131112 is an abundant number, since it is smaller than the sum of its proper divisors (315435288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204131112 is a wasteful number, since it uses less digits than its factorization.

204131112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 204131112 is about 14287.4459579030. The cubic root of 204131112 is about 588.8026199695.

Adding to 204131112 its reverse (211131402), we get a palindrome (415262514).

It can be divided in two parts, 2041 and 31112, that added together give a triangular number (33153 = T₂₅₇).

The spelling of 204131112 in words is "two hundred four million, one hundred thirty-one thousand, one hundred twelve".