1320103323312 has 160 divisors (see below), whose sum is σ = 3507947352000. Its totient is φ = 427523604480.

The previous prime is 1320103323299. The next prime is 1320103323347. The reversal of 1320103323312 is 2133233010231.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 772441114 + ... + 772442822.

It is an arithmetic number, because the mean of its divisors is an integer number (21924670950).

Almost surely, 2^{1320103323312} is an apocalyptic number.

1320103323312 is a gapful number since it is divisible by the number (12) 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 1320103323312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1753973676000).

1320103323312 is an abundant number, since it is smaller than the sum of its proper divisors (2187844028688).

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

1320103323312 is a wasteful number, since it uses less digits than its factorization.

1320103323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 1320103323312 its reverse (2133233010231), we get a palindrome (3453336333543).

The spelling of 1320103323312 in words is "one trillion, three hundred twenty billion, one hundred three million, three hundred twenty-three thousand, three hundred twelve".