204630131 has 4 divisors (see below), whose sum is σ = 204897000. Its totient is φ = 204363264.

The previous prime is 204630079. The next prime is 204630137. The reversal of 204630131 is 131036402.

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 204630131 - 2⁶ = 204630067 is a prime.

It is a super-2 number, since 2×204630131² = 83746981026154322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204630137) 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 3 ways as a sum of consecutive naturals, for example, 132281 + ... + 133818.

It is an arithmetic number, because the mean of its divisors is an integer number (51224250).

Almost surely, 2^204630131 is an apocalyptic number.

204630131 is a deficient number, since it is larger than the sum of its proper divisors (266869).

204630131 is an equidigital number, since it uses as much as digits as its factorization.

204630131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266868.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 204630131 is about 14304.8988461995. The cubic root of 204630131 is about 589.2820252387.

Adding to 204630131 its reverse (131036402), we get a palindrome (335666533).

The spelling of 204630131 in words is "two hundred four million, six hundred thirty thousand, one hundred thirty-one".