1232120031312 has 80 divisors (see below), whose sum is σ = 3323657236608. Its totient is φ = 392578982400.

The previous prime is 1232120031287. The next prime is 1232120031313. The reversal of 1232120031312 is 2131300212321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232120031313) 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, 1220062 + ... + 1988162.

Almost surely, 2^{1232120031312} is an apocalyptic number.

1232120031312 is a gapful number since it is divisible by the number (12) 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 1232120031312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661828618304).

1232120031312 is an abundant number, since it is smaller than the sum of its proper divisors (2091537205296).

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

1232120031312 is a wasteful number, since it uses less digits than its factorization.

1232120031312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769588 (or 769582 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1232120031312 its reverse (2131300212321), we get a palindrome (3363420243633).

The spelling of 1232120031312 in words is "one trillion, two hundred thirty-two billion, one hundred twenty million, thirty-one thousand, three hundred twelve".