13320131232 has 48 divisors (see below), whose sum is σ = 35146560960. Its totient is φ = 4417032192.

The previous prime is 13320131189. The next prime is 13320131233. The reversal of 13320131232 is 23213102331.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 13320131199 and 13320131208.

It is not an unprimeable number, because it can be changed into a prime (13320131233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340932 + ... + 377987.

It is an arithmetic number, because the mean of its divisors is an integer number (732220020).

Almost surely, 2^13320131232 is an apocalyptic number.

13320131232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13320131232 is an abundant number, since it is smaller than the sum of its proper divisors (21826429728).

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

13320131232 is a wasteful number, since it uses less digits than its factorization.

13320131232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719125 (or 719117 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13320131232 its reverse (23213102331), we get a palindrome (36533233563).

The spelling of 13320131232 in words is "thirteen billion, three hundred twenty million, one hundred thirty-one thousand, two hundred thirty-two".