13131131331232 has 24 divisors (see below), whose sum is σ = 27212541904800. Its totient is φ = 6220009577664.

The previous prime is 13131131331229. The next prime is 13131131331271. The reversal of 13131131331232 is 23213313113131.

It is a happy number.

It is a super-2 number, since 2×13131131331232² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13131131331232.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10798627132 + ... + 10798628347.

It is an arithmetic number, because the mean of its divisors is an integer number (1133855912700).

Almost surely, 2^{13131131331232} is an apocalyptic number.

It is an amenable number.

13131131331232 is an abundant number, since it is smaller than the sum of its proper divisors (14081410573568).

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

13131131331232 is a wasteful number, since it uses less digits than its factorization.

13131131331232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21597255508 (or 21597255500 counting only the distinct ones).

The product of its digits is 2916, while the sum is 28.

Adding to 13131131331232 its reverse (23213313113131), we get a palindrome (36344444444363).

The spelling of 13131131331232 in words is "thirteen trillion, one hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty-two".