12321143432 has 16 divisors (see below), whose sum is σ = 24879232140. Its totient is φ = 5686681536.

The previous prime is 12321143407. The next prime is 12321143437. The reversal of 12321143432 is 23434112321.

It can be written as a sum of positive squares in 2 ways, for example, as 11993316196 + 327827236 = 109514^2 + 18106^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (12321143437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59236163 + ... + 59236370.

Almost surely, 2^12321143432 is an apocalyptic number.

It is an amenable number.

12321143432 is an abundant number, since it is smaller than the sum of its proper divisors (12558088708).

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

12321143432 is a wasteful number, since it uses less digits than its factorization.

12321143432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118472552 (or 118472548 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 12321143432 its reverse (23434112321), we get a palindrome (35755255753).

The spelling of 12321143432 in words is "twelve billion, three hundred twenty-one million, one hundred forty-three thousand, four hundred thirty-two".