1317350440 has 32 divisors (see below), whose sum is σ = 3387473280. Its totient is φ = 451662912.

The previous prime is 1317350413. The next prime is 1317350443. The reversal of 1317350440 is 440537131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 1317350399 and 1317350408.

It is not an unprimeable number, because it can be changed into a prime (1317350443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2352132 + ... + 2352691.

It is an arithmetic number, because the mean of its divisors is an integer number (105858540).

Almost surely, 2^1317350440 is an apocalyptic number.

1317350440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1317350440 is an abundant number, since it is smaller than the sum of its proper divisors (2070122840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317350440 is a wasteful number, since it uses less digits than its factorization.

1317350440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4704841 (or 4704837 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1317350440 is about 36295.3225636583. The cubic root of 1317350440 is about 1096.2268631024.

Adding to 1317350440 its reverse (440537131), we get a palindrome (1757887571).

The spelling of 1317350440 in words is "one billion, three hundred seventeen million, three hundred fifty thousand, four hundred forty".