13531150215 has 48 divisors (see below), whose sum is σ = 25688347776. Its totient is φ = 6534360000.

The previous prime is 13531150183. The next prime is 13531150229. The reversal of 13531150215 is 51205113531.

13531150215 is a `hidden beast` number, since 135 + 3 + 11 + 502 + 15 = 666.

It is not a de Polignac number, because 13531150215 - 2⁵ = 13531150183 is a prime.

It is a super-2 number, since 2×13531150215² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 69792 + ... + 178698.

It is an arithmetic number, because the mean of its divisors is an integer number (535173912).

Almost surely, 2^13531150215 is an apocalyptic number.

13531150215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13531150215 is a deficient number, since it is larger than the sum of its proper divisors (12157197561).

13531150215 is a wasteful number, since it uses less digits than its factorization.

13531150215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109180 (or 109177 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 13531150215 its reverse (51205113531), we get a palindrome (64736263746).

The spelling of 13531150215 in words is "thirteen billion, five hundred thirty-one million, one hundred fifty thousand, two hundred fifteen".