13531321146 has 32 divisors (see below), whose sum is σ = 31051980288. Its totient is φ = 3850686000.

The previous prime is 13531321127. The next prime is 13531321147. The reversal of 13531321146 is 64112313531.

13531321146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13531321147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 631240 + ... + 652323.

It is an arithmetic number, because the mean of its divisors is an integer number (970374384).

Almost surely, 2^13531321146 is an apocalyptic number.

13531321146 is an abundant number, since it is smaller than the sum of its proper divisors (17520659142).

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

13531321146 is a wasteful number, since it uses less digits than its factorization.

13531321146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283826.

The product of its digits is 6480, while the sum is 30.

Adding to 13531321146 its reverse (64112313531), we get a palindrome (77643634677).

The spelling of 13531321146 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-one thousand, one hundred forty-six".