1320231331232 has 96 divisors (see below), whose sum is σ = 2864008445760. Its totient is φ = 594080593920.

The previous prime is 1320231331219. The next prime is 1320231331247. The reversal of 1320231331232 is 2321331320231.

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, 45758603 + ... + 45787445.

It is an arithmetic number, because the mean of its divisors is an integer number (29833421310).

Almost surely, 2^{1320231331232} 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 1320231331232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432004222880).

1320231331232 is an abundant number, since it is smaller than the sum of its proper divisors (1543777114528).

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

1320231331232 is a wasteful number, since it uses less digits than its factorization.

1320231331232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30166 (or 30158 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 1320231331232 its reverse (2321331320231), we get a palindrome (3641562651463).

The spelling of 1320231331232 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty-two".