1231578883712 has 256 divisors, whose sum is σ = 2711882160000. Its totient is φ = 555006836736.

The previous prime is 1231578883673. The next prime is 1231578883741. The reversal of 1231578883712 is 2173888751321.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1215773318 + ... + 1215774330.

Almost surely, 2^{1231578883712} 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 1231578883712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355941080000).

1231578883712 is an abundant number, since it is smaller than the sum of its proper divisors (1480303276288).

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

1231578883712 is a wasteful number, since it uses less digits than its factorization.

1231578883712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371 (or 1359 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 56.

The spelling of 1231578883712 in words is "one trillion, two hundred thirty-one billion, five hundred seventy-eight million, eight hundred eighty-three thousand, seven hundred twelve".