1323311213320 has 16 divisors (see below), whose sum is σ = 2977450230060. Its totient is φ = 529324485312.

The previous prime is 1323311213311. The next prime is 1323311213327. The reversal of 1323311213320 is 233121133231.

It can be written as a sum of positive squares in 2 ways, for example, as 1236263791876 + 87047421444 = 1111874^2 + 295038^2 .

It is not an unprimeable number, because it can be changed into a prime (1323311213327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16541390127 + ... + 16541390206.

Almost surely, 2^{1323311213320} is an apocalyptic number.

1323311213320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323311213320 is an abundant number, since it is smaller than the sum of its proper divisors (1654139016740).

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

1323311213320 is a wasteful number, since it uses less digits than its factorization.

1323311213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33082780344 (or 33082780340 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1323311213320 its reverse (233121133231), we get a palindrome (1556432346551).

The spelling of 1323311213320 in words is "one trillion, three hundred twenty-three billion, three hundred eleven million, two hundred thirteen thousand, three hundred twenty".