12311431400 has 48 divisors (see below), whose sum is σ = 28772479500. Its totient is φ = 4899041280.

The previous prime is 12311431397. The next prime is 12311431439. The reversal of 12311431400 is 413411321.

12311431400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2737591684 + 9573839716 = 52322^2 + 97846^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 120875 + ... + 198074.

Almost surely, 2^12311431400 is an apocalyptic number.

12311431400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12311431400 is an abundant number, since it is smaller than the sum of its proper divisors (16461048100).

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

12311431400 is a wasteful number, since it uses less digits than its factorization.

12311431400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319158 (or 319149 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 12311431400 its reverse (413411321), we get a palindrome (12724842721).

The spelling of 12311431400 in words is "twelve billion, three hundred eleven million, four hundred thirty-one thousand, four hundred".