13531321106 has 4 divisors (see below), whose sum is σ = 20296981662. Its totient is φ = 6765660552.

The previous prime is 13531321087. The next prime is 13531321109. The reversal of 13531321106 is 60112313531.

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

It can be written as a sum of positive squares in only one way, i.e., 8034433225 + 5496887881 = 89635^2 + 74141^2 .

It is not an unprimeable number, because it can be changed into a prime (13531321109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382830275 + ... + 3382830278.

Almost surely, 2^13531321106 is an apocalyptic number.

13531321106 is a deficient number, since it is larger than the sum of its proper divisors (6765660556).

13531321106 is an equidigital number, since it uses as much as digits as its factorization.

13531321106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765660555.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 13531321106 its reverse (60112313531), we get a palindrome (73643634637).

The spelling of 13531321106 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-one thousand, one hundred six".