285319011 has 16 divisors (see below), whose sum is σ = 384698016. Its totient is φ = 188084736.

The previous prime is 285319003. The next prime is 285319037. The reversal of 285319011 is 110913582.

It is not a de Polignac number, because 285319011 - 2³ = 285319003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285319011.

It is not an unprimeable number, because it can be changed into a prime (285319051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207121 + ... + 208493.

It is an arithmetic number, because the mean of its divisors is an integer number (24043626).

Almost surely, 2^285319011 is an apocalyptic number.

285319011 is a deficient number, since it is larger than the sum of its proper divisors (99379005).

285319011 is a wasteful number, since it uses less digits than its factorization.

285319011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 285319011 is about 16891.3886640501. The cubic root of 285319011 is about 658.3298843523.

The spelling of 285319011 in words is "two hundred eighty-five million, three hundred nineteen thousand, eleven".