12031111230 has 64 divisors (see below), whose sum is σ = 29619717120. Its totient is φ = 3126118784.

The previous prime is 12031111229. The next prime is 12031111271. The reversal of 12031111230 is 3211113021.

It is a happy number.

It is a super-2 number, since 2×12031111230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 301276 + ... + 338864.

It is an arithmetic number, because the mean of its divisors is an integer number (462808080).

Almost surely, 2^12031111230 is an apocalyptic number.

12031111230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12031111230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14809858560).

12031111230 is an abundant number, since it is smaller than the sum of its proper divisors (17588605890).

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

12031111230 is a wasteful number, since it uses less digits than its factorization.

12031111230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37873.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 12031111230 its reverse (3211113021), we get a palindrome (15242224251).

The spelling of 12031111230 in words is "twelve billion, thirty-one million, one hundred eleven thousand, two hundred thirty".