1223031310320 has 80 divisors (see below), whose sum is σ = 3807953552160. Its totient is φ = 324717468672.

The previous prime is 1223031310201. The next prime is 1223031310321. The reversal of 1223031310320 is 230131303221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1223031310320² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223031310321) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11071599 + ... + 11181518.

It is an arithmetic number, because the mean of its divisors is an integer number (47599419402).

Almost surely, 2^{1223031310320} is an apocalyptic number.

1223031310320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223031310320 is an abundant number, since it is smaller than the sum of its proper divisors (2584922241840).

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

1223031310320 is a wasteful number, since it uses less digits than its factorization.

1223031310320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22253362 (or 22253356 counting only the distinct ones).

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

Adding to 1223031310320 its reverse (230131303221), we get a palindrome (1453162613541).

It can be divided in two parts, 1223031 and 310320, that added together give a palindrome (1533351).

The spelling of 1223031310320 in words is "one trillion, two hundred twenty-three billion, thirty-one million, three hundred ten thousand, three hundred twenty".