1312022331232 has 96 divisors (see below), whose sum is σ = 2704380666624. Its totient is φ = 625389811200.

The previous prime is 1312022331199. The next prime is 1312022331239. The reversal of 1312022331232 is 2321332202131.

It is a junction number, because it is equal to n+sod(n) for n = 1312022331197 and 1312022331206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312022331239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615682807 + ... + 615684937.

It is an arithmetic number, because the mean of its divisors is an integer number (28170631944).

Almost surely, 2^{1312022331232} 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 1312022331232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352190333312).

1312022331232 is an abundant number, since it is smaller than the sum of its proper divisors (1392358335392).

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

1312022331232 is a wasteful number, since it uses less digits than its factorization.

1312022331232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572 (or 4564 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1312022331232 its reverse (2321332202131), we get a palindrome (3633354533363).

The spelling of 1312022331232 in words is "one trillion, three hundred twelve billion, twenty-two million, three hundred thirty-one thousand, two hundred thirty-two".