12031322418 has 16 divisors (see below), whose sum is σ = 26736272160. Its totient is φ = 4010440788.

The previous prime is 12031322417. The next prime is 12031322431. The reversal of 12031322418 is 81422313021.

12031322418 is a `hidden beast` number, since 120 + 313 + 224 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12031322391 and 12031322400.

It is not an unprimeable number, because it can be changed into a prime (12031322417) 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, 111401080 + ... + 111401187.

It is an arithmetic number, because the mean of its divisors is an integer number (1671017010).

Almost surely, 2^12031322418 is an apocalyptic number.

12031322418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12031322418 is an abundant number, since it is smaller than the sum of its proper divisors (14704949742).

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

12031322418 is a wasteful number, since it uses less digits than its factorization.

12031322418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222802278 (or 222802272 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 12031322418 its reverse (81422313021), we get a palindrome (93453635439).

The spelling of 12031322418 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, four hundred eighteen".