1228031045 has 4 divisors (see below), whose sum is σ = 1473637260. Its totient is φ = 982424832.

The previous prime is 1228031017. The next prime is 1228031053. The reversal of 1228031045 is 5401308221.

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 741255076 + 486775969 = 27226^2 + 22063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228031045 - 2¹⁸ = 1227768901 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122803100 + ... + 122803109.

It is an arithmetic number, because the mean of its divisors is an integer number (368409315).

Almost surely, 2^1228031045 is an apocalyptic number.

It is an amenable number.

1228031045 is a deficient number, since it is larger than the sum of its proper divisors (245606215).

1228031045 is an equidigital number, since it uses as much as digits as its factorization.

1228031045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245606214.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1228031045 is about 35043.2738910051. The cubic root of 1228031045 is about 1070.8692517168.

Adding to 1228031045 its reverse (5401308221), we get a palindrome (6629339266).

The spelling of 1228031045 in words is "one billion, two hundred twenty-eight million, thirty-one thousand, forty-five".