12311432 has 16 divisors (see below), whose sum is σ = 26381760. Its totient is φ = 5276304.

The previous prime is 12311419. The next prime is 12311443. The reversal of 12311432 is 23411321.

It is a self number, because there is not a number n which added to its sum of digits gives 12311432.

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, 109868 + ... + 109979.

It is an arithmetic number, because the mean of its divisors is an integer number (1648860).

Almost surely, 2^12311432 is an apocalyptic number.

It is an amenable number.

12311432 is an abundant number, since it is smaller than the sum of its proper divisors (14070328).

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

12311432 is a wasteful number, since it uses less digits than its factorization.

12311432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219860 (or 219856 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 12311432 is about 3508.7650249055. The cubic root of 12311432 is about 230.9065168983.

Adding to 12311432 its reverse (23411321), we get a palindrome (35722753).

The spelling of 12311432 in words is "twelve million, three hundred eleven thousand, four hundred thirty-two".