231243121112 has 96 divisors (see below), whose sum is σ = 497187482400. Its totient is φ = 100499030016.

The previous prime is 231243121097. The next prime is 231243121127. The reversal of 231243121112 is 211121342132.

231243121112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231243121097) and next prime (231243121127).

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1467128 + ... + 1617080.

It is an arithmetic number, because the mean of its divisors is an integer number (5179036275).

Almost surely, 2^231243121112 is an apocalyptic number.

It is an amenable number.

231243121112 is an abundant number, since it is smaller than the sum of its proper divisors (265944361288).

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

231243121112 is a wasteful number, since it uses less digits than its factorization.

231243121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150045 (or 150024 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 231243121112 its reverse (211121342132), we get a palindrome (442364463244).

The spelling of 231243121112 in words is "two hundred thirty-one billion, two hundred forty-three million, one hundred twenty-one thousand, one hundred twelve".