1217001344 has 64 divisors (see below), whose sum is σ = 2648026080. Its totient is φ = 553728000.

The previous prime is 1217001343. The next prime is 1217001347. The reversal of 1217001344 is 4431007121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217001343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 112994 + ... + 123294.

Almost surely, 2^1217001344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217001344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324013040).

1217001344 is an abundant number, since it is smaller than the sum of its proper divisors (1431024736).

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

1217001344 is a wasteful number, since it uses less digits than its factorization.

1217001344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10399 (or 10387 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1217001344 is about 34885.5463480221. The cubic root of 1217001344 is about 1067.6535602430.

Adding to 1217001344 its reverse (4431007121), we get a palindrome (5648008465).

The spelling of 1217001344 in words is "one billion, two hundred seventeen million, one thousand, three hundred forty-four".