1323101328 has 160 divisors (see below), whose sum is σ = 3788328960. Its totient is φ = 396264960.

The previous prime is 1323101317. The next prime is 1323101333. The reversal of 1323101328 is 8231013231.

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

It is a junction number, because it is equal to n+sod(n) for n = 1323101298 and 1323101307.

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, 1497975 + ... + 1498857.

It is an arithmetic number, because the mean of its divisors is an integer number (23677056).

Almost surely, 2^1323101328 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 1323101328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1894164480).

1323101328 is an abundant number, since it is smaller than the sum of its proper divisors (2465227632).

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

1323101328 is a wasteful number, since it uses less digits than its factorization.

1323101328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1323101328 is about 36374.4598310408. The cubic root of 1323101328 is about 1097.8197387562.

Adding to 1323101328 its reverse (8231013231), we get a palindrome (9554114559).

The spelling of 1323101328 in words is "one billion, three hundred twenty-three million, one hundred one thousand, three hundred twenty-eight".