204373631 has 16 divisors (see below), whose sum is σ = 255571200. Its totient is φ = 158772480.

The previous prime is 204373627. The next prime is 204373657. The reversal of 204373631 is 136373402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204373631 - 2² = 204373627 is a prime.

It is a super-2 number, since 2×204373631² = 83537162096248322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204373594 and 204373603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204373621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22895 + ... + 30543.

It is an arithmetic number, because the mean of its divisors is an integer number (15973200).

Almost surely, 2^204373631 is an apocalyptic number.

204373631 is a deficient number, since it is larger than the sum of its proper divisors (51197569).

204373631 is a wasteful number, since it uses less digits than its factorization.

204373631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8014.

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 204373631 is about 14295.9305748174. The cubic root of 204373631 is about 589.0357043317.

The spelling of 204373631 in words is "two hundred four million, three hundred seventy-three thousand, six hundred thirty-one".