255311011 has 4 divisors (see below), whose sum is σ = 255343000. Its totient is φ = 255279024.

The previous prime is 255310987. The next prime is 255311051. The reversal of 255311011 is 110113552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 255311011 - 2²⁷ = 121093283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255311011.

It is not an unprimeable number, because it can be changed into a prime (255311051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6940 + ... + 23638.

It is an arithmetic number, because the mean of its divisors is an integer number (63835750).

Almost surely, 2^255311011 is an apocalyptic number.

255311011 is a deficient number, since it is larger than the sum of its proper divisors (31989).

255311011 is a wasteful number, since it uses less digits than its factorization.

255311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31988.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 255311011 is about 15978.4545873498. The cubic root of 255311011 is about 634.3902726018.

Adding to 255311011 its reverse (110113552), we get a palindrome (365424563).

The spelling of 255311011 in words is "two hundred fifty-five million, three hundred eleven thousand, eleven".