205013331 has 6 divisors (see below), whose sum is σ = 296130380. Its totient is φ = 136675548.

The previous prime is 205013327. The next prime is 205013351. The reversal of 205013331 is 133310502.

It is not a de Polignac number, because 205013331 - 2² = 205013327 is a prime.

It is a super-2 number, since 2×205013331² = 84060931775431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205013311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11389621 + ... + 11389638.

Almost surely, 2^205013331 is an apocalyptic number.

205013331 is a deficient number, since it is larger than the sum of its proper divisors (91117049).

205013331 is a wasteful number, since it uses less digits than its factorization.

205013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22779265 (or 22779262 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 205013331 is about 14318.2865944218. The cubic root of 205013331 is about 589.6496349377.

Adding to 205013331 its reverse (133310502), we get a palindrome (338323833).

It can be divided in two parts, 20501 and 3331, that added together give a palindrome (23832).

The spelling of 205013331 in words is "two hundred five million, thirteen thousand, three hundred thirty-one".