205700231 has 8 divisors (see below), whose sum is σ = 224506128. Its totient is φ = 186912000.

The previous prime is 205700207. The next prime is 205700233. The reversal of 205700231 is 132007502.

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

It is not a de Polignac number, because 205700231 - 2²⁶ = 138591367 is a prime.

It is a super-2 number, since 2×205700231² = 84625170066906722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205700233) 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, 36311 + ... + 41591.

It is an arithmetic number, because the mean of its divisors is an integer number (28063266).

Almost surely, 2^205700231 is an apocalyptic number.

205700231 is a deficient number, since it is larger than the sum of its proper divisors (18805897).

205700231 is a wasteful number, since it uses less digits than its factorization.

205700231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8833.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 205700231 is about 14342.2533445759. The cubic root of 205700231 is about 590.3074439026.

Adding to 205700231 its reverse (132007502), we get a palindrome (337707733).

The spelling of 205700231 in words is "two hundred five million, seven hundred thousand, two hundred thirty-one".