231201032112 has 60 divisors (see below), whose sum is σ = 660808643040. Its totient is φ = 75427284864.

The previous prime is 231201032093. The next prime is 231201032119. The reversal of 231201032112 is 211230102132.

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 (231201032119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17073687 + ... + 17087222.

It is an arithmetic number, because the mean of its divisors is an integer number (11013477384).

Almost surely, 2^231201032112 is an apocalyptic number.

It is an amenable number.

231201032112 is an abundant number, since it is smaller than the sum of its proper divisors (429607610928).

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

231201032112 is a wasteful number, since it uses less digits than its factorization.

231201032112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34160970 (or 34160961 counting only the distinct ones).

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

Adding to 231201032112 its reverse (211230102132), we get a palindrome (442431134244).

The spelling of 231201032112 in words is "two hundred thirty-one billion, two hundred one million, thirty-two thousand, one hundred twelve".