1323103121312 has 96 divisors (see below), whose sum is σ = 2999069805312. Its totient is φ = 562844565504.

The previous prime is 1323103121287. The next prime is 1323103121323. The reversal of 1323103121312 is 2131213013231.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34551008 + ... + 34589280.

It is an arithmetic number, because the mean of its divisors is an integer number (31240310472).

Almost surely, 2^{1323103121312} 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 1323103121312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1499534902656).

1323103121312 is an abundant number, since it is smaller than the sum of its proper divisors (1675966684000).

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

1323103121312 is a wasteful number, since it uses less digits than its factorization.

1323103121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39430 (or 39422 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1323103121312 its reverse (2131213013231), we get a palindrome (3454316134543).

The spelling of 1323103121312 in words is "one trillion, three hundred twenty-three billion, one hundred three million, one hundred twenty-one thousand, three hundred twelve".