1312312330120 has 128 divisors (see below), whose sum is σ = 3229704783360. Its totient is φ = 475935989760.

The previous prime is 1312312330103. The next prime is 1312312330123. The reversal of 1312312330120 is 210332132131.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1312312330091 and 1312312330100.

It is not an unprimeable number, because it can be changed into a prime (1312312330123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352107697 + ... + 352111423.

It is an arithmetic number, because the mean of its divisors is an integer number (25232068620).

Almost surely, 2^{1312312330120} is an apocalyptic number.

1312312330120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312312330120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614852391680).

1312312330120 is an abundant number, since it is smaller than the sum of its proper divisors (1917392453240).

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

1312312330120 is a wasteful number, since it uses less digits than its factorization.

1312312330120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5663 (or 5659 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1312312330120 its reverse (210332132131), we get a palindrome (1522644462251).

The spelling of 1312312330120 in words is "one trillion, three hundred twelve billion, three hundred twelve million, three hundred thirty thousand, one hundred twenty".