205031255 has 32 divisors (see below), whose sum is σ = 291271680. Its totient is φ = 136586880.

The previous prime is 205031227. The next prime is 205031263. The reversal of 205031255 is 552130502.

205031255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205031255 - 2¹⁴ = 205014871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205031255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98354 + ... + 100416.

It is an arithmetic number, because the mean of its divisors is an integer number (9102240).

Almost surely, 2^205031255 is an apocalyptic number.

205031255 is a deficient number, since it is larger than the sum of its proper divisors (86240425).

205031255 is a wasteful number, since it uses less digits than its factorization.

205031255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 205031255 is about 14318.9124936219. The cubic root of 205031255 is about 589.6668184903. Note that the first 3 decimals are identical.

Adding to 205031255 its reverse (552130502), we get a palindrome (757161757).

It can be divided in two parts, 20503125 and 5, that multiplied together give a square (102515625 = 10125²).

The spelling of 205031255 in words is "two hundred five million, thirty-one thousand, two hundred fifty-five".