1150223281 has 4 divisors (see below), whose sum is σ = 1217883492. Its totient is φ = 1082563072.

The previous prime is 1150223279. The next prime is 1150223293. The reversal of 1150223281 is 1823220511.

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 354983281 + 795240000 = 18841^2 + 28200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1150223281 - 2¹ = 1150223279 is a prime.

It is a super-2 number, since 2×1150223281² = 2646027192308809922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1150223251) 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 3 ways as a sum of consecutive naturals, for example, 33830080 + ... + 33830113.

It is an arithmetic number, because the mean of its divisors is an integer number (304470873).

Almost surely, 2^1150223281 is an apocalyptic number.

It is an amenable number.

1150223281 is a deficient number, since it is larger than the sum of its proper divisors (67660211).

1150223281 is an equidigital number, since it uses as much as digits as its factorization.

1150223281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67660210.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1150223281 is about 33914.9418545867. The cubic root of 1150223281 is about 1047.7573543407.

Adding to 1150223281 its reverse (1823220511), we get a palindrome (2973443792).

The spelling of 1150223281 in words is "one billion, one hundred fifty million, two hundred twenty-three thousand, two hundred eighty-one".