12231831136 has 48 divisors (see below), whose sum is σ = 27539930880. Its totient is φ = 5238725760.

The previous prime is 12231831133. The next prime is 12231831173. The reversal of 12231831136 is 63113813221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12231831098 and 12231831107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231831133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334525 + ... + 369283.

It is an arithmetic number, because the mean of its divisors is an integer number (573748560).

Almost surely, 2^12231831136 is an apocalyptic number.

12231831136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12231831136 is an abundant number, since it is smaller than the sum of its proper divisors (15308099744).

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

12231831136 is a wasteful number, since it uses less digits than its factorization.

12231831136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36347 (or 36339 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The spelling of 12231831136 in words is "twelve billion, two hundred thirty-one million, eight hundred thirty-one thousand, one hundred thirty-six".