1213343768 has 48 divisors (see below), whose sum is σ = 2802194640. Its totient is φ = 479632320.

The previous prime is 1213343707. The next prime is 1213343773. The reversal of 1213343768 is 8673433121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 939203 + ... + 940493.

It is an arithmetic number, because the mean of its divisors is an integer number (58379055).

Almost surely, 2^1213343768 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 1213343768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1401097320).

1213343768 is an abundant number, since it is smaller than the sum of its proper divisors (1588850872).

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

1213343768 is an equidigital number, since it uses as much as digits as its factorization.

1213343768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2608 (or 1313 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 1213343768 is about 34833.0843882651. The cubic root of 1213343768 is about 1066.5829115660.

Adding to 1213343768 its reverse (8673433121), we get a palindrome (9886776889).

The spelling of 1213343768 in words is "one billion, two hundred thirteen million, three hundred forty-three thousand, seven hundred sixty-eight".