13531412105 has 4 divisors (see below), whose sum is σ = 16237694532. Its totient is φ = 10825129680.

The previous prime is 13531412029. The next prime is 13531412107. The reversal of 13531412105 is 50121413531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4829694016 + 8701718089 = 69496^2 + 93283^2 .

It is not a de Polignac number, because 13531412105 - 2²² = 13527217801 is a prime.

It is a super-2 number, since 2×13531412105² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531412107) 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, 1353141206 + ... + 1353141215.

It is an arithmetic number, because the mean of its divisors is an integer number (4059423633).

Almost surely, 2^13531412105 is an apocalyptic number.

It is an amenable number.

13531412105 is a deficient number, since it is larger than the sum of its proper divisors (2706282427).

13531412105 is an equidigital number, since it uses as much as digits as its factorization.

13531412105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706282426.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 13531412105 its reverse (50121413531), we get a palindrome (63652825636).

The spelling of 13531412105 in words is "thirteen billion, five hundred thirty-one million, four hundred twelve thousand, one hundred five".