204131412 has 36 divisors (see below), whose sum is σ = 516565140. Its totient is φ = 67969152.

The previous prime is 204131399. The next prime is 204131423. The reversal of 204131412 is 214131402.

It can be written as a sum of positive squares in 2 ways, for example, as 2604996 + 201526416 = 1614^2 + 14196^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×204131412² = 83339266730227488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37368 + ... + 42480.

Almost surely, 2^204131412 is an apocalyptic number.

It is an amenable number.

204131412 is an abundant number, since it is smaller than the sum of its proper divisors (312433728).

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

204131412 is a wasteful number, since it uses less digits than its factorization.

204131412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6232 (or 6227 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 204131412 is about 14287.4564566266. The cubic root of 204131412 is about 588.8029084127.

Adding to 204131412 its reverse (214131402), we get a palindrome (418262814).

The spelling of 204131412 in words is "two hundred four million, one hundred thirty-one thousand, four hundred twelve".