255431105 has 4 divisors (see below), whose sum is σ = 306517332. Its totient is φ = 204344880.

The previous prime is 255431087. The next prime is 255431129. The reversal of 255431105 is 501134552.

255431105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159567424 + 95863681 = 12632^2 + 9791^2 .

It is not a de Polignac number, because 255431105 - 2¹⁰ = 255430081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25543106 + ... + 25543115.

It is an arithmetic number, because the mean of its divisors is an integer number (76629333).

Almost surely, 2^255431105 is an apocalyptic number.

It is an amenable number.

255431105 is a deficient number, since it is larger than the sum of its proper divisors (51086227).

255431105 is an equidigital number, since it uses as much as digits as its factorization.

255431105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51086226.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 255431105 is about 15982.2121435050. The cubic root of 255431105 is about 634.4897258433.

Adding to 255431105 its reverse (501134552), we get a palindrome (756565657).

The spelling of 255431105 in words is "two hundred fifty-five million, four hundred thirty-one thousand, one hundred five".