13113311232 has 120 divisors (see below), whose sum is σ = 39964206016. Its totient is φ = 3746562048.

The previous prime is 13113311227. The next prime is 13113311249. The reversal of 13113311232 is 23211331131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13113311199 and 13113311208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325008 + ... + 363120.

Almost surely, 2^13113311232 is an apocalyptic number.

13113311232 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 13113311232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19982103008).

13113311232 is an abundant number, since it is smaller than the sum of its proper divisors (26850894784).

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

13113311232 is an frugal number, since it uses more digits than its factorization.

13113311232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38151 (or 38125 counting only the distinct ones).

The product of its digits is 324, while the sum is 21.

Adding to 13113311232 its reverse (23211331131), we get a palindrome (36324642363).

The spelling of 13113311232 in words is "thirteen billion, one hundred thirteen million, three hundred eleven thousand, two hundred thirty-two".