13123234432 has 64 divisors (see below), whose sum is σ = 32595071040. Its totient is φ = 5112944640.

The previous prime is 13123234427. The next prime is 13123234463. The reversal of 13123234432 is 23443232131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 13123234432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655893 + ... + 675604.

It is an arithmetic number, because the mean of its divisors is an integer number (509297985).

Almost surely, 2^13123234432 is an apocalyptic number.

It is an amenable number.

13123234432 is an abundant number, since it is smaller than the sum of its proper divisors (19471836608).

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

13123234432 is a wasteful number, since it uses less digits than its factorization.

13123234432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331529 (or 1331517 counting only the distinct ones).

The product of its digits is 10368, while the sum is 28.

Adding to 13123234432 its reverse (23443232131), we get a palindrome (36566466563).

The spelling of 13123234432 in words is "thirteen billion, one hundred twenty-three million, two hundred thirty-four thousand, four hundred thirty-two".