204634531 has 4 divisors (see below), whose sum is σ = 210165232. Its totient is φ = 199103832.

The previous prime is 204634523. The next prime is 204634543. The reversal of 204634531 is 135436402.

204634531 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.

It is a cyclic number.

It is not a de Polignac number, because 204634531 - 2³ = 204634523 is a prime.

It is a super-2 number, since 2×204634531² = 83750582555179922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204634531.

It is not an unprimeable number, because it can be changed into a prime (204634231) 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, 2765295 + ... + 2765368.

It is an arithmetic number, because the mean of its divisors is an integer number (52541308).

Almost surely, 2^204634531 is an apocalyptic number.

204634531 is a deficient number, since it is larger than the sum of its proper divisors (5530701).

204634531 is an equidigital number, since it uses as much as digits as its factorization.

204634531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530700.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 204634531 is about 14305.0526388406. The cubic root of 204634531 is about 589.2862488303.

The spelling of 204634531 in words is "two hundred four million, six hundred thirty-four thousand, five hundred thirty-one".