131105203404 has 36 divisors (see below), whose sum is σ = 355856982264. Its totient is φ = 37458629376.

The previous prime is 131105203391. The next prime is 131105203409. The reversal of 131105203404 is 404302501131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (131105203409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111483429 + ... + 111484604.

It is an arithmetic number, because the mean of its divisors is an integer number (9884916174).

Almost surely, 2^131105203404 is an apocalyptic number.

131105203404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131105203404 is an abundant number, since it is smaller than the sum of its proper divisors (224751778860).

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

131105203404 is a wasteful number, since it uses less digits than its factorization.

131105203404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222968054 (or 222968045 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 131105203404 its reverse (404302501131), we get a palindrome (535407704535).

The spelling of 131105203404 in words is "one hundred thirty-one billion, one hundred five million, two hundred three thousand, four hundred four".