204133031 has 4 divisors (see below), whose sum is σ = 205939632. Its totient is φ = 202326432.

The previous prime is 204133021. The next prime is 204133043. The reversal of 204133031 is 130331402.

It is a happy number.

204133031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130331402 = 2 ⋅65165701.

It is a cyclic number.

It is not a de Polignac number, because 204133031 - 2⁶ = 204132967 is a prime.

It is a super-2 number, since 2×204133031² = 83340588690493922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204133021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 903131 + ... + 903356.

It is an arithmetic number, because the mean of its divisors is an integer number (51484908).

Almost surely, 2^204133031 is an apocalyptic number.

204133031 is a deficient number, since it is larger than the sum of its proper divisors (1806601).

204133031 is a wasteful number, since it uses less digits than its factorization.

204133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806600.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 204133031 is about 14287.5131146047. The cubic root of 204133031 is about 588.8044650397.

Adding to 204133031 its reverse (130331402), we get a palindrome (334464433).

The spelling of 204133031 in words is "two hundred four million, one hundred thirty-three thousand, thirty-one".