13531015112 has 16 divisors (see below), whose sum is σ = 26245503900. Its totient is φ = 6532214080.

The previous prime is 13531015111. The next prime is 13531015151. The reversal of 13531015112 is 21151013531.

It can be written as a sum of positive squares in 2 ways, for example, as 12585698596 + 945316516 = 112186^2 + 30746^2 .

It is a super-2 number, since 2×13531015112² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13531015111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29161439 + ... + 29161902.

Almost surely, 2^13531015112 is an apocalyptic number.

It is an amenable number.

13531015112 is a deficient number, since it is larger than the sum of its proper divisors (12714488788).

13531015112 is a wasteful number, since it uses less digits than its factorization.

13531015112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58323376 (or 58323372 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 23.

Adding to 13531015112 its reverse (21151013531), we get a palindrome (34682028643).

The spelling of 13531015112 in words is "thirteen billion, five hundred thirty-one million, fifteen thousand, one hundred twelve".