204232681 has 9 divisors (see below), whose sum is σ = 211492119. Its totient is φ = 197215800.

The previous prime is 204232657. The next prime is 204232723. The reversal of 204232681 is 186232402.

The square root of 204232681 is 14291.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 65464281 + 138768400 = 8091^2 + 11780^2 .

It is not a de Polignac number, because 204232681 - 2⁵ = 204232649 is a prime.

It is a super-2 number, since 2×204232681² = 83421975976895522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204232381) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 442791 + ... + 443251.

Almost surely, 2^204232681 is an apocalyptic number.

204232681 is the 14291-st square number.

204232681 is the 7146-th centered octagonal number.

It is an amenable number.

204232681 is a deficient number, since it is larger than the sum of its proper divisors (7259438).

204232681 is an frugal number, since it uses more digits than its factorization.

204232681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The cubic root of 204232681 is about 588.9002601195.

It can be divided in two parts, 20423 and 2681, that added together give a square (23104 = 152²).

The spelling of 204232681 in words is "two hundred four million, two hundred thirty-two thousand, six hundred eighty-one".