1213703568 has 480 divisors, whose sum is σ = 4559708160. Its totient is φ = 302227200.

The previous prime is 1213703549. The next prime is 1213703597. The reversal of 1213703568 is 8653073121.

1213703568 is a `hidden beast` number, since 1 + 21 + 3 + 70 + 3 + 568 = 666.

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

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 95 ways as a sum of consecutive naturals, for example, 11342971 + ... + 11343077.

It is an arithmetic number, because the mean of its divisors is an integer number (9499392).

Almost surely, 2^1213703568 is an apocalyptic number.

1213703568 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 1213703568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2279854080).

1213703568 is an abundant number, since it is smaller than the sum of its proper divisors (3346004592).

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

1213703568 is a wasteful number, since it uses less digits than its factorization.

1213703568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1213703568 is about 34838.2486356591. The cubic root of 1213703568 is about 1066.6883278587.

Adding to 1213703568 its reverse (8653073121), we get a palindrome (9866776689).

The spelling of 1213703568 in words is "one billion, two hundred thirteen million, seven hundred three thousand, five hundred sixty-eight".