1317310225 has 48 divisors (see below), whose sum is σ = 2048440320. Its totient is φ = 816379200.

The previous prime is 1317310213. The next prime is 1317310231. The reversal of 1317310225 is 5220137131.

It is a happy number.

It is not a de Polignac number, because 1317310225 - 2¹¹ = 1317308177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 1317310225.

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 47 ways as a sum of consecutive naturals, for example, 342664 + ... + 346486.

It is an arithmetic number, because the mean of its divisors is an integer number (42675840).

Almost surely, 2^1317310225 is an apocalyptic number.

It is an amenable number.

1317310225 is a deficient number, since it is larger than the sum of its proper divisors (731130095).

1317310225 is a wasteful number, since it uses less digits than its factorization.

1317310225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 1317310225 is about 36294.7685624251. The cubic root of 1317310225 is about 1096.2157080823.

Adding to 1317310225 its reverse (5220137131), we get a palindrome (6537447356).

The spelling of 1317310225 in words is "one billion, three hundred seventeen million, three hundred ten thousand, two hundred twenty-five".