1231352485312 has 112 divisors (see below), whose sum is σ = 2679767889120. Its totient is φ = 558777139200.

The previous prime is 1231352485291. The next prime is 1231352485357. The reversal of 1231352485312 is 2135842531321.

It is a congruent number.

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, 25564612 + ... + 25612732.

It is an arithmetic number, because the mean of its divisors is an integer number (23926499010).

Almost surely, 2^{1231352485312} 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 1231352485312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339883944560).

1231352485312 is an abundant number, since it is smaller than the sum of its proper divisors (1448415403808).

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

1231352485312 is a wasteful number, since it uses less digits than its factorization.

1231352485312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48990 (or 48980 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The spelling of 1231352485312 in words is "one trillion, two hundred thirty-one billion, three hundred fifty-two million, four hundred eighty-five thousand, three hundred twelve".