12431441320 has 32 divisors (see below), whose sum is σ = 28429285320. Its totient is φ = 4891057920.

The previous prime is 12431441287. The next prime is 12431441357. The reversal of 12431441320 is 2314413421.

It can be written as a sum of positive squares in 4 ways, for example, as 2246191236 + 10185250084 = 47394^2 + 100922^2 .

It is a super-4 number, since 4×12431441320⁴ (a number of 41 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2544987 + ... + 2549866.

Almost surely, 2^12431441320 is an apocalyptic number.

12431441320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12431441320 is an abundant number, since it is smaller than the sum of its proper divisors (15997844000).

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

12431441320 is a wasteful number, since it uses less digits than its factorization.

12431441320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094925 (or 5094921 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 12431441320 its reverse (2314413421), we get a palindrome (14745854741).

The spelling of 12431441320 in words is "twelve billion, four hundred thirty-one million, four hundred forty-one thousand, three hundred twenty".