1230023312112 has 160 divisors (see below), whose sum is σ = 3726871782400. Its totient is φ = 342317352960.

The previous prime is 1230023312081. The next prime is 1230023312171. The reversal of 1230023312112 is 2112133200321.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 1819764 + ... + 2402412.

It is an arithmetic number, because the mean of its divisors is an integer number (23292948640).

Almost surely, 2^{1230023312112} is an apocalyptic number.

1230023312112 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 1230023312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1863435891200).

1230023312112 is an abundant number, since it is smaller than the sum of its proper divisors (2496848470288).

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

1230023312112 is a wasteful number, since it uses less digits than its factorization.

1230023312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582831 (or 582825 counting only the distinct ones).

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

Adding to 1230023312112 its reverse (2112133200321), we get a palindrome (3342156512433).

The spelling of 1230023312112 in words is "one trillion, two hundred thirty billion, twenty-three million, three hundred twelve thousand, one hundred twelve".