1213030312320 has 256 divisors, whose sum is σ = 3962693145600. Its totient is φ = 315528904704.

The previous prime is 1213030312271. The next prime is 1213030312343. The reversal of 1213030312320 is 232130303121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12541264 + ... + 12637616.

It is an arithmetic number, because the mean of its divisors is an integer number (15479270100).

Almost surely, 2^{1213030312320} is an apocalyptic number.

1213030312320 is a gapful number since it is divisible by the number (10) 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 1213030312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1981346572800).

1213030312320 is an abundant number, since it is smaller than the sum of its proper divisors (2749662833280).

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

1213030312320 is an equidigital number, since it uses as much as digits as its factorization.

1213030312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96537 (or 96525 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1213030312320 its reverse (232130303121), we get a palindrome (1445160615441).

The spelling of 1213030312320 in words is "one trillion, two hundred thirteen billion, thirty million, three hundred twelve thousand, three hundred twenty".