320231112012 has 384 divisors, whose sum is σ = 1023356436480. Its totient is φ = 84518691840.

The previous prime is 320231112011. The next prime is 320231112043. The reversal of 320231112012 is 210211132023.

320231112012 is a `hidden beast` number, since 320 + 2 + 311 + 1 + 20 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (320231112011) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 329794687 + ... + 329795657.

It is an arithmetic number, because the mean of its divisors is an integer number (2664990720).

Almost surely, 2^320231112012 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 320231112012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511678218240).

320231112012 is an abundant number, since it is smaller than the sum of its proper divisors (703125324468).

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

320231112012 is a wasteful number, since it uses less digits than its factorization.

320231112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458 (or 1450 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 320231112012 its reverse (210211132023), we get a palindrome (530442244035).

The spelling of 320231112012 in words is "three hundred twenty billion, two hundred thirty-one million, one hundred twelve thousand, twelve".