12131023340 has 12 divisors (see below), whose sum is σ = 25475149056. Its totient is φ = 4852409328.

The previous prime is 12131023291. The next prime is 12131023343. The reversal of 12131023340 is 4332013121.

12131023340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 606551167 = 12131023340 / (1 + 2 + 1 + 3 + 1 + 0 + 2 + 3 + 3 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (12131023343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303275564 + ... + 303275603.

It is an arithmetic number, because the mean of its divisors is an integer number (2122929088).

Almost surely, 2^12131023340 is an apocalyptic number.

12131023340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131023340 is an abundant number, since it is smaller than the sum of its proper divisors (13344125716).

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

12131023340 is a wasteful number, since it uses less digits than its factorization.

12131023340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606551176 (or 606551174 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12131023340 its reverse (4332013121), we get a palindrome (16463036461).

The spelling of 12131023340 in words is "twelve billion, one hundred thirty-one million, twenty-three thousand, three hundred forty".