12131322040 has 16 divisors (see below), whose sum is σ = 27295474680. Its totient is φ = 4852528800.

The previous prime is 12131322029. The next prime is 12131322059. The reversal of 12131322040 is 4022313121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12131321999 and 12131322017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151641486 + ... + 151641565.

Almost surely, 2^12131322040 is an apocalyptic number.

12131322040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131322040 is an abundant number, since it is smaller than the sum of its proper divisors (15164152640).

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

12131322040 is a wasteful number, since it uses less digits than its factorization.

12131322040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303283062 (or 303283058 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12131322040 its reverse (4022313121), we get a palindrome (16153635161).

The spelling of 12131322040 in words is "twelve billion, one hundred thirty-one million, three hundred twenty-two thousand, forty".