205631241 has 8 divisors (see below), whose sum is σ = 278267424. Its totient is φ = 135041280.

The previous prime is 205631219. The next prime is 205631249. The reversal of 205631241 is 142136502.

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

It is not a de Polignac number, because 205631241 - 2⁹ = 205630729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205631249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511320 + ... + 511721.

It is an arithmetic number, because the mean of its divisors is an integer number (34783428).

Almost surely, 2^205631241 is an apocalyptic number.

It is an amenable number.

205631241 is a deficient number, since it is larger than the sum of its proper divisors (72636183).

205631241 is a wasteful number, since it uses less digits than its factorization.

205631241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023111.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 205631241 is about 14339.8480117468. The cubic root of 205631241 is about 590.2414419278.

Adding to 205631241 its reverse (142136502), we get a palindrome (347767743).

The spelling of 205631241 in words is "two hundred five million, six hundred thirty-one thousand, two hundred forty-one".