12311443400 has 48 divisors (see below), whose sum is σ = 28662570240. Its totient is φ = 4917960000.

The previous prime is 12311443351. The next prime is 12311443421. The reversal of 12311443400 is 434411321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109217 + ... + 191183.

It is an arithmetic number, because the mean of its divisors is an integer number (597136880).

Almost surely, 2^12311443400 is an apocalyptic number.

12311443400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12311443400 is an abundant number, since it is smaller than the sum of its proper divisors (16351126840).

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

12311443400 is a wasteful number, since it uses less digits than its factorization.

12311443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82734 (or 82725 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12311443400 its reverse (434411321), we get a palindrome (12745854721).

The spelling of 12311443400 in words is "twelve billion, three hundred eleven million, four hundred forty-three thousand, four hundred".