12231234312 has 64 divisors (see below), whose sum is σ = 33855840000. Its totient is φ = 3651109440.

The previous prime is 12231234299. The next prime is 12231234319. The reversal of 12231234312 is 21343213221.

It is a super-2 number, since 2×12231234312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12231234319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328062 + ... + 363437.

It is an arithmetic number, because the mean of its divisors is an integer number (528997500).

Almost surely, 2^12231234312 is an apocalyptic number.

12231234312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231234312 is an abundant number, since it is smaller than the sum of its proper divisors (21624605688).

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

12231234312 is a wasteful number, since it uses less digits than its factorization.

12231234312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691586 (or 691582 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 12231234312 its reverse (21343213221), we get a palindrome (33574447533).

The spelling of 12231234312 in words is "twelve billion, two hundred thirty-one million, two hundred thirty-four thousand, three hundred twelve".