205531230 has 32 divisors (see below), whose sum is σ = 495075744. Its totient is φ = 54608256.

The previous prime is 205531229. The next prime is 205531231. The reversal of 205531230 is 32135502.

It is an interprime number because it is at equal distance from previous prime (205531229) and next prime (205531231).

It is a junction number, because it is equal to n+sod(n) for n = 205531197 and 205531206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205531231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4057 + ... + 20676.

It is an arithmetic number, because the mean of its divisors is an integer number (15471117).

Almost surely, 2^205531230 is an apocalyptic number.

205531230 is an abundant number, since it is smaller than the sum of its proper divisors (289544514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205531230 is a wasteful number, since it uses less digits than its factorization.

205531230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25020.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 205531230 is about 14336.3604167864. The cubic root of 205531230 is about 590.1457362863.

Adding to 205531230 its reverse (32135502), we get a palindrome (237666732).

It can be divided in two parts, 205531 and 230, that added together give a triangular number (205761 = T₆₄₁).

The spelling of 205531230 in words is "two hundred five million, five hundred thirty-one thousand, two hundred thirty".