1317331228 has 12 divisors (see below), whose sum is σ = 2354379552. Its totient is φ = 644651360.

The previous prime is 1317331151. The next prime is 1317331247. The reversal of 1317331228 is 8221337131.

It is a self number, because there is not a number n which added to its sum of digits gives 1317331228.

It is a congruent number.

It is an unprimeable number.

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, 3503353 + ... + 3503728.

It is an arithmetic number, because the mean of its divisors is an integer number (196198296).

Almost surely, 2^1317331228 is an apocalyptic number.

It is an amenable number.

1317331228 is a deficient number, since it is larger than the sum of its proper divisors (1037048324).

1317331228 is a wasteful number, since it uses less digits than its factorization.

1317331228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7007132 (or 7007130 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 1317331228 is about 36295.0579004911. The cubic root of 1317331228 is about 1096.2215340186.

Adding to 1317331228 its reverse (8221337131), we get a palindrome (9538668359).

The spelling of 1317331228 in words is "one billion, three hundred seventeen million, three hundred thirty-one thousand, two hundred twenty-eight".