204531097 has 8 divisors (see below), whose sum is σ = 216689256. Its totient is φ = 192387072.

The previous prime is 204531077. The next prime is 204531127. The reversal of 204531097 is 790135402.

It can be written as a sum of positive squares in 4 ways, for example, as 69696 + 204461401 = 264^2 + 14299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204531097 - 2⁷ = 204530969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204531077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47173 + ... + 51325.

It is an arithmetic number, because the mean of its divisors is an integer number (27086157).

Almost surely, 2^204531097 is an apocalyptic number.

It is an amenable number.

204531097 is a deficient number, since it is larger than the sum of its proper divisors (12158159).

204531097 is a wasteful number, since it uses less digits than its factorization.

204531097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 204531097 is about 14301.4368858517. The cubic root of 204531097 is about 589.1869457687.

Adding to 204531097 its reverse (790135402), we get a palindrome (994666499).

The spelling of 204531097 in words is "two hundred four million, five hundred thirty-one thousand, ninety-seven".