13531155312 has 20 divisors (see below), whose sum is σ = 34955484680. Its totient is φ = 4510385088.

The previous prime is 13531155289. The next prime is 13531155331. The reversal of 13531155312 is 21355113531.

It is a self number, because there is not a number n which added to its sum of digits gives 13531155312.

It is a congruent number.

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, 140949487 + ... + 140949582.

It is an arithmetic number, because the mean of its divisors is an integer number (1747774234).

Almost surely, 2^13531155312 is an apocalyptic number.

13531155312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13531155312 is an abundant number, since it is smaller than the sum of its proper divisors (21424329368).

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

13531155312 is a wasteful number, since it uses less digits than its factorization.

13531155312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281899080 (or 281899074 counting only the distinct ones).

The product of its digits is 6750, while the sum is 30.

Adding to 13531155312 its reverse (21355113531), we get a palindrome (34886268843).

The spelling of 13531155312 in words is "thirteen billion, five hundred thirty-one million, one hundred fifty-five thousand, three hundred twelve".