11321013432 has 64 divisors (see below), whose sum is σ = 29235883680. Its totient is φ = 3650406912.

The previous prime is 11321013427. The next prime is 11321013433. The reversal of 11321013432 is 23431012311.

It is a junction number, because it is equal to n+sod(n) for n = 11321013399 and 11321013408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321013433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116778 + ... + 190470.

Almost surely, 2^11321013432 is an apocalyptic number.

11321013432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11321013432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14617941840).

11321013432 is an abundant number, since it is smaller than the sum of its proper divisors (17914870248).

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

11321013432 is a wasteful number, since it uses less digits than its factorization.

11321013432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73912 (or 73908 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11321013432 its reverse (23431012311), we get a palindrome (34752025743).

The spelling of 11321013432 in words is "eleven billion, three hundred twenty-one million, thirteen thousand, four hundred thirty-two".