285211133 has 8 divisors (see below), whose sum is σ = 297886560. Its totient is φ = 272797200.

The previous prime is 285211103. The next prime is 285211141. The reversal of 285211133 is 331112582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285211133 - 2¹⁰ = 285210109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285211103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63143 + ... + 67508.

It is an arithmetic number, because the mean of its divisors is an integer number (37235820).

Almost surely, 2^285211133 is an apocalyptic number.

It is an amenable number.

285211133 is a deficient number, since it is larger than the sum of its proper divisors (12675427).

285211133 is a wasteful number, since it uses less digits than its factorization.

285211133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130747.

The product of its digits is 1440, while the sum is 26.

The square root of 285211133 is about 16888.1950782196. The cubic root of 285211133 is about 658.2469032433.

The spelling of 285211133 in words is "two hundred eighty-five million, two hundred eleven thousand, one hundred thirty-three".