2011000281 has 4 divisors (see below), whose sum is σ = 2681333712. Its totient is φ = 1340666852.

The previous prime is 2011000279. The next prime is 2011000289. The reversal of 2011000281 is 1820001102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2011000281 - 2¹ = 2011000279 is a prime.

It is a super-2 number, since 2×2011000281² = 8088244260364157922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011000281.

It is not an unprimeable number, because it can be changed into a prime (2011000289) 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, 335166711 + ... + 335166716.

It is an arithmetic number, because the mean of its divisors is an integer number (670333428).

Almost surely, 2^2011000281 is an apocalyptic number.

It is an amenable number.

2011000281 is a deficient number, since it is larger than the sum of its proper divisors (670333431).

2011000281 is an equidigital number, since it uses as much as digits as its factorization.

2011000281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670333430.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2011000281 is about 44844.1777826286. The cubic root of 2011000281 is about 1262.2267421015.

Adding to 2011000281 its reverse (1820001102), we get a palindrome (3831001383).

The spelling of 2011000281 in words is "two billion, eleven million, two hundred eighty-one", and thus it is an aban number.