1317109248 has 400 divisors, whose sum is σ = 4852293600. Its totient is φ = 346374144.

The previous prime is 1317109243. The next prime is 1317109291. The reversal of 1317109248 is 8429017131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317109243) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3773778 + ... + 3774126.

It is an arithmetic number, because the mean of its divisors is an integer number (12130734).

Almost surely, 2^1317109248 is an apocalyptic number.

1317109248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1317109248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2426146800).

1317109248 is an abundant number, since it is smaller than the sum of its proper divisors (3535184352).

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

1317109248 is an equidigital number, since it uses as much as digits as its factorization.

1317109248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1317109248 is about 36291.9997795657. Note that the first 3 decimals coincide. The cubic root of 1317109248 is about 1096.1599567629.

The spelling of 1317109248 in words is "one billion, three hundred seventeen million, one hundred nine thousand, two hundred forty-eight".