1231033301112 has 64 divisors (see below), whose sum is σ = 3148159633920. Its totient is φ = 400962560768.

The previous prime is 1231033301107. The next prime is 1231033301171. The reversal of 1231033301112 is 2111033301321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188418 + ... + 1580369.

It is an arithmetic number, because the mean of its divisors is an integer number (49189994280).

Almost surely, 2^{1231033301112} is an apocalyptic number.

1231033301112 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 1231033301112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574079816960).

1231033301112 is an abundant number, since it is smaller than the sum of its proper divisors (1917126332808).

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

1231033301112 is a wasteful number, since it uses less digits than its factorization.

1231033301112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769460 (or 1769456 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1231033301112 its reverse (2111033301321), we get a palindrome (3342066602433).

The spelling of 1231033301112 in words is "one trillion, two hundred thirty-one billion, thirty-three million, three hundred one thousand, one hundred twelve".